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18 Highlights 75 Differences 0 Reactions 0 Likes
Sleep Number c4 Facts: 117 Specifications & 18 Highlights
From bedtime comfort to build quality, this mattress has 117 reasons to check it out — starting with general information, dimensions & weight, comfort & firmness & construction & materials and more.
A fast snapshot of the Sleep Number c4, covering its standout specification and what you can expect right out of the box.
Sleep Number c4
Sleep Number c4 features a 10-inch profile mattress. It is built around the fundamental DualAir technology for individualized firmness settings on each side. The mattress is also integrated with SleepIQ Technology for sleep tracking.
Specifications & Facts 117
Specs measured. Drama avoided.
Need more than marketing buzzwords? This Sleep Number c4 mattress review explores price, features, comfort, and how it compares to other mattresses out there.
General Information 10
Sleep Number c4 Model Name
What is the model name?
63 Sleep Number c4 0 Votes C4
68 Mattresses in this range Hybrid
Provides the marketing name used by the brand.
When it comes to Model Name, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 5 score measurement.
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Sleep Number c4 Warranty Period
What is the warranty period?
53 Sleep Number c4 0 Votes 15 Years
62 Mattresses in this range 10 Years
Duration of warranty coverage.
When it comes to Warranty Period, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 9 score measurement.
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Sleep Number c4 Mattress Type
What is the mattress type?
53 Sleep Number c4 0 Votes Air
40 Mattresses in this range Hybrid
Categorizes construction type.
When it comes to Mattress Type, Sleep Number c4 ◉ is better than Mattress in this range ◉ , delivering higher 13 score measurement.
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Sleep Number c4 Product Type
What type of mattress is it?
78 Sleep Number c4 0 Votes Airbed
67 Mattresses in this range Hybrid
Defines the fundamental mattress category.
When it comes to Product Type, Sleep Number c4 ◉ is better than Mattress in this range ◉ , delivering higher 11 score measurement.
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Sleep Number c4 Release Year
What is the release year?
53 Sleep Number c4 0 Votes 2017
81 Mattresses in this range 2024
Indicates when the product was introduced to the market.
When it comes to Release Year, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 28 score measurement.
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Sleep Number c4 Country of Manufacture
Where is the mattress manufactured?
73 Sleep Number c4 0 Votes USA
73 Mattresses in this range USA
Shows where the mattress is manufactured.
When it comes to Country of Manufacture, Sleep Number c4 ◉ is same as Mattress in this range ◉ .
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Sleep Number c4 Intended Use
What is the intended use?
73 Sleep Number c4 0 Votes Home
74 Mattresses in this range Home
Defines the usage context.
When it comes to Intended Use, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 1 score measurement.
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Sleep Number c4 Target Market
What is the target market?
93 Sleep Number c4 0 Votes Global
83 Mattresses in this range US
Specifies the geographic or demographic market.
When it comes to Target Market, Sleep Number c4 ◉ is better than Mattress in this range ◉ , delivering higher 10 score measurement.
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Sleep Number c4 Trial Period Length
What is the trial period length?
100 Nights 0Votes
134.42 Nights (Average)
Indicates how many nights consumers can try the mattress risk-free.
When it comes to Trial Period Length, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 34.4 Nights measurement.
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Sleep Number c4 Free Return Policy
Does it come with a free return policy?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Shows whether the product allows hassle-free returns.
When it comes to Free Return Policy, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Dimensions & Weight 15
Sleep Number c4 Mattress Size
What is the mattress size?
0 Sleep Number c4 0 Votes Queen, King, Cal King, Split King
47 Mattresses in this range Twin, Twin XL, Full, Queen, King, Cal King
Identifies the size for the mattress.
When it comes to Mattress Size, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 47 score measurement.
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Sleep Number c4 Width (Queen)
What is the Queen mattress width?
60 inch 0Votes
59.54 inch (Average)
Standard width for Queen size mattress.
When it comes to Width (Queen), Sleep Number c4 ◉ is better than Mattress in this range ◉ , delivering higher 0.5 inch measurement.
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Sleep Number c4 Width (King)
What is the King mattress width?
76 inch 0Votes
73.93 inch (Average)
Standard width for King size mattress.
When it comes to Width (King), Sleep Number c4 ◉ is better than Mattress in this range ◉ , delivering higher 2.1 inch measurement.
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Sleep Number c4 Width (California King)
What is the Cal King mattress width?
72 inch 0Votes
72.01 inch (Average)
Standard width for California King mattress.
When it comes to Width (California King), Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 0.0 inch measurement.
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Sleep Number c4 Width (Split King)
What is the Split King mattress width?
76 inch 0Votes
55.29 inch (Average)
Combined width of two Twin XL mattresses.
When it comes to Width (Split King), Sleep Number c4 ◉ is better than Mattress in this range ◉ , delivering higher 20.7 inch measurement.
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Sleep Number c4 Height (Queen)
What is the Queen mattress height?
9 inch 0Votes
12.3 inch (Average)
Standard thickness range for Queen mattresses.
When it comes to Height (Queen), Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 3.3 inch measurement.
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Sleep Number c4 Height (King)
What is the King mattress height?
9 inch 0Votes
12.05 inch (Average)
Standard thickness range for King mattresses.
When it comes to Height (King), Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 3.1 inch measurement.
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Sleep Number c4 Height (California King)
What is the Cal King mattress height?
9 inch 0Votes
12.63 inch (Average)
Standard thickness range for California King mattresses.
When it comes to Height (California King), Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 3.6 inch measurement.
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Sleep Number c4 Height (Split King)
What is the Split King mattress height?
9 inch 0Votes
12.42 inch (Average)
Standard thickness range for Split King mattresses.
When it comes to Height (Split King), Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 3.4 inch measurement.
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Sleep Number c4 Depth (Queen)
What is the Queen mattress length?
80 inch 0Votes
78.52 inch (Average)
Standard length for Queen size mattress.
When it comes to Depth (Queen), Sleep Number c4 ◉ is better than Mattress in this range ◉ , delivering higher 1.5 inch measurement.
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Sleep Number c4 Depth (King)
What is the King mattress length?
80 inch 0Votes
78.98 inch (Average)
Standard length for King size mattress.
When it comes to Depth (King), Sleep Number c4 ◉ is better than Mattress in this range ◉ , delivering higher 1.0 inch measurement.
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Sleep Number c4 Depth (California King)
What is the Cal King mattress length?
84 inch 0Votes
83.13 inch (Average)
Standard length for California King mattress.
When it comes to Depth (California King), Sleep Number c4 ◉ is better than Mattress in this range ◉ , delivering higher 0.9 inch measurement.
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Sleep Number c4 Depth (Split King)
What is the Split King mattress length?
80 inch 0Votes
79.48 inch (Average)
Standard length for Split King (two Twin XLs).
When it comes to Depth (Split King), Sleep Number c4 ◉ is better than Mattress in this range ◉ , delivering higher 0.5 inch measurement.
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Sleep Number c4 Profile Height Option
What is the profile height option?
0 Sleep Number c4 0 Votes 9 inches
38 Mattresses in this range 10 inches
Indicates if the mattress is available in multiple profile heights.
When it comes to Profile Height Option, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 38 score measurement.
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Sleep Number c4 Thickness Category
What is the thickness category?
0 Sleep Number c4 0 Votes Medium Profile
37 Mattresses in this range Medium Profile
Classifies the mattress thickness category.
When it comes to Thickness Category, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 37 score measurement.
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Comfort & Firmness 13
Sleep Number c4 Motion Isolation Rating
What is the motion isolation rating?
73 Sleep Number c4 0 Votes 8/10
72 Mattresses in this range 8/10
Sleep Number c4
With a strong rating of 8/10, this mattress is great for couples, minimizing motion transfer so that movements from one sleeper won’t disturb the other. This is ideal for light sleepers or partners with differing schedules.
Measures how well the mattress prevents motion transfer.
When it comes to Motion Isolation Rating, Sleep Number c4 ◉ is better than Mattress in this range ◉ , delivering higher 1 score measurement.
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Sleep Number c4 Edge Support Rating
What is the edge support rating?
60 Sleep Number c4 0 Votes 8/10
58 Mattresses in this range 8/10
Sleep Number c4
The mattress features reinforced foam edges that help prevent sagging and make sitting on the edge of the bed more stable. It also allows you to use the entire surface of the mattress without feeling like you’re rolling off.
Indicates stability around the mattress edges.
When it comes to Edge Support Rating, Sleep Number c4 ◉ is better than Mattress in this range ◉ , delivering higher 2 score measurement.
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Sleep Number c4 Cooling Technology
What cooling technology is included?
69 Sleep Number c4 0 Votes Gel-Infused Foam
66 Mattresses in this range Bamboo, Open Cell Foam
Sleep Number c4
The gel-infused foam in the comfort layer helps dissipate body heat, keeping you cooler throughout the night. This is especially useful for hot sleepers or those who experience temperature fluctuations during sleep.
GDescribes specific cooling methods used.
When it comes to Cooling Technology, Sleep Number c4 ◉ is better than Mattress in this range ◉ , delivering higher 3 score measurement.
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Sleep Number c4 Comfort Layer Thickness
What is the comfort layer thickness?
1.5 inch 0Votes
4.04 inch (Average)
Sleep Number c4
The 1.5-inch comfort layer is made of polyurethane foam, offering moderate cushioning while still maintaining a firm feel. It’s a good option for sleepers who want minimal plushness but still need pressure relief. About 3.8 cm thick.
Thickness of the comfort layer on top.
When it comes to Comfort Layer Thickness, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 2.5 inch measurement.
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Sleep Number c4 Zoned Support
Does the mattress include zoned support?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Sleep Number c4
The three-zone comfort layer provides targeted support for the head, neck, back, and hips, ensuring proper spinal alignment. This is especially beneficial for side sleepers who need extra support at their pressure points.
Indicates if the mattress offers different support zones.
When it comes to Zoned Support, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 44 score measurement.
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Sleep Number c4 Firmness Level
What is the firmness level?
43 Sleep Number c4 0 Votes Firm
54 Mattresses in this range Medium
Describes the general firmness category.
When it comes to Firmness Level, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 11 score measurement.
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Sleep Number c4 Firmness Scale Rating
What is the firmness rating?
75 Sleep Number c4 0 Votes 8/10
57 Mattresses in this range 7/10
Numeric scale where 1 is softest and 10 is firmest.
When it comes to Firmness Scale Rating, Sleep Number c4 ◉ is better than Mattress in this range ◉ , delivering higher 18 score measurement.
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Sleep Number c4 Comfort Technology
What comfort technology is included?
61 Sleep Number c4 0 Votes Polyurethane Foam
70 Mattresses in this range Plush Foam
Special comfort features used in the top layers.
When it comes to Comfort Technology, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 9 score measurement.
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Sleep Number c4 Pressure Relief Rating
What is the pressure relief rating?
63 Sleep Number c4 0 Votes Good
80 Mattresses in this range Good
Rates how well the mattress relieves pressure points.
When it comes to Pressure Relief Rating, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 17 score measurement.
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Sleep Number c4 Sleep Position Suitability
What sleep positions is it suitable for?
37 Sleep Number c4 0 Votes Back, Side, Stomach, Combo
35 Mattresses in this range Back, Side, Combo
Shows which sleeping positions are best supported.
When it comes to Sleep Position Suitability, Sleep Number c4 ◉ is better than Mattress in this range ◉ , delivering higher 2 score measurement.
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Sleep Number c4 Temperature Regulation Feature
Does it have temperature regulation features?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if mattress is designed to maintain neutral sleep temperature.
When it comes to Temperature Regulation Feature, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 49 score measurement.
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Sleep Number c4 Adjustable Firmness Range
Does it have an adjustable firmness range?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Shows if firmness can be adjusted or customized.
When it comes to Adjustable Firmness Range, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 41 score measurement.
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Sleep Number c4 Ergonomic Certification
Does it have ergonomic certifications?
78 Sleep Number c4 0 Votes Chiropractic Association
79 Mattresses in this range Ergocert
Lists recognized ergonomic approvals.
When it comes to Ergonomic Certification, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 1 score measurement.
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Construction & Materials 12
Sleep Number c4 Mattress Core Material
What is the core material?
68 Sleep Number c4 0 Votes Air Chambers
43 Mattresses in this range Foam
Sleep Number c4
The air chamber system is the heart of Sleep Number beds, allowing you to adjust the firmness on each side of the bed independently. This feature makes the C4 a great choice for couples with different sleep preferences.
Defines the main support structure.
When it comes to Mattress Core Material, Sleep Number c4 ◉ is better than Mattress in this range ◉ , delivering higher 25 score measurement.
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Sleep Number c4 Comfort Layer Material
What is the comfort layer material?
0 Sleep Number c4 0 Votes Polyurethane Foam
45 Mattresses in this range Memory Foam
Sleep Number c4
The polyurethane foam in the comfort layer provides a slight cushioning feel while still allowing for the firmness of the air chambers to shine through. It helps alleviate pressure without feeling too soft.
Materials used in the comfort layers.
When it comes to Comfort Layer Material, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 45 score measurement.
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Sleep Number c4 Cover Material
What is the cover material?
0 Sleep Number c4 0 Votes Polyester
43 Mattresses in this range Organic Cotton
Sleep Number c4
The polyester cover is breathable, allowing for airflow that helps keep the mattress cooler during sleep. It’s durable and easy to clean with spot cleaning recommended for minor spills.
Materials used for the outer cover.
When it comes to Cover Material, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 43 score measurement.
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Sleep Number c4 Flame Retardant Material
What flame retardant is used?
0 Sleep Number c4 0 Votes Natural Wool
37 Mattresses in this range Natural Wool
Sleep Number c4
The use of natural wool as a flame retardant material is an eco-friendly choice that’s both safe and sustainable. Wool is a natural material that also helps regulate temperature, keeping you comfortable through the night.
Material used to meet fire safety standards.
When it comes to Flame Retardant Material, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 37 score measurement.
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Sleep Number c4 Reinforced Edge Material
What is the reinforced edge material?
0 Sleep Number c4 0 Votes Foam
40 Mattresses in this range High-Density Foam
Sleep Number c4
The foam edge reinforcement ensures that the mattress maintains its shape over time, preventing sagging and providing better support for getting in and out of bed.
Material reinforcement along the edges.
When it comes to Reinforced Edge Material, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 40 score measurement.
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Sleep Number c4 Removable / Washable Cover
Does it have a removable and washable cover?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Sleep Number c4
The cover can be removed for spot cleaning, which is great for maintaining the mattress’s cleanliness. It’s not machine-washable, but the ability to clean it by hand is still a major convenience.
Indicates if the cover can be removed and washed.
When it comes to Removable / Washable Cover, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 41 score measurement.
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Sleep Number c4 Foam Type
What foam type is included?
0 Sleep Number c4 0 Votes Polyurethane Foam
41 Mattresses in this range Memory Foam, High-Density
Specifies the type of foam used.
When it comes to Foam Type, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 41 score measurement.
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Sleep Number c4 Eco-Friendly Material Certification
What eco-friendly certifications are included?
0 Sleep Number c4 0 Votes CertiPUR-US
44 Mattresses in this range CertiPUR-US
Certifications for sustainable materials.
When it comes to Eco-Friendly Material Certification, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 44 score measurement.
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Sleep Number c4 Layer Count
What is the layer count?
0 Sleep Number c4 0 Votes 3
45 Mattresses in this range 3
Total number of layers in mattress construction.
When it comes to Layer Count, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 45 score measurement.
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Sleep Number c4 Natural / Organic Material
Does it use natural or organic materials?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates whether natural or organic materials are included.
When it comes to Natural / Organic Material, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Hypoallergenic Treatment
Does it have hypoallergenic treatment?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Shows if materials are treated to resist allergens.
When it comes to Hypoallergenic Treatment, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Handcrafted Construction
Is the mattress handcrafted?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if the mattress is handmade or artisan-crafted.
When it comes to Handcrafted Construction, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Performance & Durability 11
Sleep Number c4 Expected Lifespan
What is the expected lifespan?
15 Years 0Votes
10.36 Years (Average)
Sleep Number c4
With a lifespan of 15 years, this mattress is designed to provide consistent comfort and support for the long haul, ensuring you won’t need to replace it any time soon.
Average years the mattress is designed to last.
When it comes to Expected Lifespan, Sleep Number c4 ◉ is better than Mattress in this range ◉ , delivering higher 4.6 Years measurement.
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Sleep Number c4 Sag Resistance Rating
What is the sag resistance rating?
0 Sleep Number c4 0 Votes Medium
41 Mattresses in this range Medium
Sleep Number c4
This rating suggests that while the mattress will resist sagging over time, heavier individuals may want to pay extra attention to their Sleep Number settings to avoid excessive compression.
Rates the mattress resistance to sagging.
When it comes to Sag Resistance Rating, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 41 score measurement.
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Sleep Number c4 Memory Foam Recovery Time
What is the recovery time of the foam?
5 sec 0Votes
3.14 sec (Average)
Time it takes memory foam to return to shape.
When it comes to Memory Foam Recovery Time, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 1.9 sec measurement.
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Sleep Number c4 Density Rating
What is the density rating?
0 Sleep Number c4 0 Votes Medium
39 Mattresses in this range Medium
Foam density that indicates durability and support.
When it comes to Density Rating, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 39 score measurement.
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Sleep Number c4 Indentation Load Deflection (ILD)
What is the ILD value?
0 Sleep Number c4 0 Votes Medium
42 Mattresses in this range Medium (20–30 lbs)
Measures foam firmness by required load to indent.
When it comes to Indentation Load Deflection (ILD), Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 42 score measurement.
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Sleep Number c4 Rotatable Design
Can the mattress be rotated?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if mattress can be rotated to extend life.
When it comes to Rotatable Design, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Flippable Design
Can the mattress be flipped?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Shows whether the mattress can be flipped.
When it comes to Flippable Design, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Anti-Microbial Treatment
Does it have antimicrobial treatment?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if materials are treated to resist microbes.
When it comes to Anti-Microbial Treatment, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Bed Bug Resistant
Is the mattress bed bug resistant?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Shows if the mattress has protection against bed bugs.
When it comes to Bed Bug Resistant, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Warranty Coverage Type
What type of warranty coverage is provided?
0 Sleep Number c4 0 Votes Limited
43 Mattresses in this range Limited
Describes the type of warranty coverage.
When it comes to Warranty Coverage Type, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 43 score measurement.
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Sleep Number c4 Indentation Resistance Guarantee
Is there an indentation resistance guarantee?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Assurance that mattress won’t indent prematurely.
When it comes to Indentation Resistance Guarantee, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Comfort Adjustability 9
Sleep Number c4 Adjustable Base Compatibility
Is it compatible with adjustable bases?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Sleep Number c4
The mattress is compatible with Sleep Number’s adjustable bases, which allow for customizable head and foot elevation. This is ideal for reading, watching TV, or improving circulation while sleeping.
Indicates if mattress can be used with an adjustable bed base.
When it comes to Adjustable Base Compatibility, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 44 score measurement.
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Sleep Number c4 Dual Firmness Option
Does it offer dual firmness?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Sleep Number c4
The Dual Firmness option allows each sleeper to adjust their side of the mattress to their preferred firmness, making it perfect for couples with different sleeping preferences.
Indicates if mattress offers two firmness levels in one design.
When it comes to Dual Firmness Option, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 41 score measurement.
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Sleep Number c4 Split Mattress Option
Is it available in split design?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Shows if mattress can be split into two sides.
When it comes to Split Mattress Option, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 43 score measurement.
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Sleep Number c4 Removable Top Layer
Does it have a removable top layer?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if the top comfort layer can be removed or swapped.
When it comes to Removable Top Layer, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 40 score measurement.
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Sleep Number c4 Modular Layer Design
Does it have modular layers?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Allows layers to be rearranged for customized comfort.
When it comes to Modular Layer Design, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Customizable Firmness Inserts
Does it support firmness inserts?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Supports inserts or pads to adjust firmness.
When it comes to Customizable Firmness Inserts, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Smart Adjustable Firmness
Does it offer smart firmness adjustment?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if firmness can be changed via smart tech.
When it comes to Smart Adjustable Firmness, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 40 score measurement.
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Sleep Number c4 Head & Foot Elevation Support
Does it support head & foot elevation?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Shows if mattress supports head and foot elevation.
When it comes to Head & Foot Elevation Support, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 44 score measurement.
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Sleep Number c4 Replaceable Comfort Layer Program
Does it offer a replaceable comfort layer program?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if brand allows swapping comfort layers through a program.
When it comes to Replaceable Comfort Layer Program, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Health & Safety 9
Sleep Number c4 CertiPUR-US Certified
Is it CertiPUR-US certified?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Shows if foams meet CertiPUR-US safety standards.
When it comes to CertiPUR-US Certified, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 46 score measurement.
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Sleep Number c4 GREENGUARD Gold Certified
Is it GREENGUARD Gold certified?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates compliance with low chemical emissions.
When it comes to GREENGUARD Gold Certified, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 OEKO-TEX Certified
Is it OEKO-TEX certified?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Ensures textiles are free from harmful substances.
When it comes to OEKO-TEX Certified, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Formaldehyde Free
Is the mattress formaldehyde free?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if product is free from formaldehyde chemicals.
When it comes to Formaldehyde Free, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 45 score measurement.
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Sleep Number c4 Chemical-Free Fire Barrier
Does it use a chemical-free fire barrier?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Fire safety protection without chemical sprays.
When it comes to Chemical-Free Fire Barrier, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 46 score measurement.
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Sleep Number c4 Low VOC Emission
Does it have low VOC emission?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Ensures mattress has low volatile organic compound emissions.
When it comes to Low VOC Emission, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 45 score measurement.
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Sleep Number c4 Allergy-Friendly
Is it allergy-friendly?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Mattress is suitable for people with allergies.
When it comes to Allergy-Friendly, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Anti-Dust Mite Treatment
Does it have anti-dust mite treatment?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Treated to resist dust mites.
When it comes to Anti-Dust Mite Treatment, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Asthma & Allergy Foundation Certification (AAFA)
Is it AAFA certified?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Confirms endorsement by AAFA for allergy safety.
When it comes to Asthma & Allergy Foundation Certification (AAFA), Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Temperature & Climate 8
Sleep Number c4 Cooling Gel Infusion
Does it have cooling gel infusion?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if cooling gel is infused in foam layers.
When it comes to Cooling Gel Infusion, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 43 score measurement.
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Sleep Number c4 Phase Change Material
Does it use phase change materials?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Shows if mattress uses phase-change materials for temperature control.
When it comes to Phase Change Material, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Breathable Cover
Does it have a breathable cover?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if the outer cover allows airflow.
When it comes to Breathable Cover, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 47 score measurement.
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Sleep Number c4 Moisture-Wicking Fabric
Does it use moisture-wicking fabric?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Ensures cover or material draws away sweat and moisture.
When it comes to Moisture-Wicking Fabric, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Heat Dissipation Rating
What is the heat dissipation rating?
0 Sleep Number c4 0 Votes Good
40 Mattresses in this range Good
Rates how well mattress disperses heat.
When it comes to Heat Dissipation Rating, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 40 score measurement.
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Sleep Number c4 Climate Adaptability
Is it climate adaptable?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if mattress adapts to various climates.
When it comes to Climate Adaptability, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 44 score measurement.
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Sleep Number c4 Seasonal Use Design
Does it have a seasonal use design?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Mattress is designed with seasonal dual sides for hot and cold weather.
When it comes to Seasonal Use Design, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 43 score measurement.
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Sleep Number c4 Airflow Channel Design
Does it feature airflow channels?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Includes built-in airflow channels for ventilation.
When it comes to Airflow Channel Design, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 45 score measurement.
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Seating & Capacity 8
Sleep Number c4 Seating Capacity
What is the seating capacity?
0 Sleep Number c4 0 Votes 2 adults
38 Mattresses in this range 2 adults
Maximum number of people the mattress is designed to seat or sleep.
When it comes to Seating Capacity, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 38 score measurement.
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Sleep Number c4 Maximum Weight Capacity
What is the maximum weight capacity?
400 lbs 0Votes
479.23 lbs (Average)
Maximum supported body weight.
When it comes to Maximum Weight Capacity, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 79.2 lbs measurement.
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Sleep Number c4 Couple Friendly Design
Is it couple friendly?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if mattress minimizes motion transfer and supports two sleepers.
When it comes to Couple Friendly Design, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 45 score measurement.
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Sleep Number c4 Edge Sitting Comfort Rating
What is the edge sitting comfort rating?
0 Sleep Number c4 0 Votes Good
41 Mattresses in this range Good
Rates how comfortable and stable the edge feels when sitting.
When it comes to Edge Sitting Comfort Rating, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 41 score measurement.
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Sleep Number c4 Bunk Bed Compatibility
Is it compatible with bunk beds?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if mattress is safe to use on bunk beds.
When it comes to Bunk Bed Compatibility, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Child / Toddler Suitability
Is it suitable for children or toddlers?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Shows if the mattress is safe for children or toddlers.
When it comes to Child / Toddler Suitability, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Pet Friendly Design
Is it pet friendly?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if mattress surface resists pet scratches and fur.
When it comes to Pet Friendly Design, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 43 score measurement.
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Sleep Number c4 Heavy Sleeper Support
Does it support heavy sleepers?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if the mattress provides extra support for heavier individuals.
When it comes to Heavy Sleeper Support, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Travel & Portability 7
Sleep Number c4 Quick Expansion Time After Unboxing
What is the quick expansion time?
24 hrs 0Votes
23.79 hrs (Average)
Time needed for mattress to reach full shape after opening.
When it comes to Quick Expansion Time After Unboxing, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 0.2 hrs measurement.
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Sleep Number c4 Roll Pack / Bed-in-Box Design
Is it a roll pack or bed-in-box design?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if the mattress is compressed and rolled into a box for shipping.
When it comes to Roll Pack / Bed-in-Box Design, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Easy Transport Handles
Does it have transport handles?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Shows if mattress includes sewn-in handles for moving.
When it comes to Easy Transport Handles, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Foldable Design
Is it foldable?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if mattress can be folded for storage or portability.
When it comes to Foldable Design, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Vacuum-Sealed Packaging
Does it use vacuum-sealed packaging?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Describes whether mattress is vacuum sealed for delivery.
When it comes to Vacuum-Sealed Packaging, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Storage Bag
Is a storage bag included?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Shows if mattress comes with a bag for storage or moving.
When it comes to Storage Bag, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Re-Rollable for Storage/Move
Can it be re-rolled for storage or moving?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if mattress can be re-rolled for easier moving or storage.
When it comes to Re-Rollable for Storage/Move, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Technology & Smart Features 8
Sleep Number c4 Smart Sensor Connectivity
Does it connect with smart sensors?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Sleep Number c4
The smart sensors in the mattress allow it to communicate with the SleepIQ app, providing insights into your sleep quality and giving you personalized recommendations for better rest.
Shows if mattress can connect with external smart sensors.
When it comes to Smart Sensor Connectivity, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 39 score measurement.
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Sleep Number c4 Sleep Tracking Integration
Does it integrate with sleep tracking?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if mattress integrates with sleep tracking systems.
When it comes to Sleep Tracking Integration, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 40 score measurement.
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Sleep Number c4 App Connectivity
Does it have app connectivity?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if mattress has an app for customization or tracking.
When it comes to App Connectivity, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 39 score measurement.
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Sleep Number c4 USB Charging Port
Does it have USB charging ports?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Shows if mattress includes built-in USB charging ports.
When it comes to USB Charging Port, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Wireless Control
Does it have wireless control?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if features can be controlled wirelessly.
When it comes to Wireless Control, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 39 score measurement.
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Sleep Number c4 Smart Home Compatibility
Is it smart home compatible?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Shows if mattress works with Alexa, Google Home, etc.
When it comes to Smart Home Compatibility, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 39 score measurement.
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Sleep Number c4 Integrated Heating or Cooling Control
Does it have integrated heating or cooling?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates built-in heating or cooling control.
When it comes to Integrated Heating or Cooling Control, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Anti-Snore Position Integration
Does it have anti-snore position integration?
Yes 0Votes Sleep Number c4
Yes Mattresses in this range
Works with adjustable bases or sensors to reduce snoring.
When it comes to Anti-Snore Position Integration, Sleep Number c4 ◉ is worse than Mattress in this range ◉ , delivering equal 39 score measurement.
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Environmental & Sustainability 7
Sleep Number c4 Recyclable Materials
Does it use recyclable materials?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if mattress materials can be recycled.
When it comes to Recyclable Materials, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Sustainable Sourcing
Is it sustainably sourced?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Shows if materials come from responsibly managed sources.
When it comes to Sustainable Sourcing, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Carbon Neutral Production
Is it carbon neutral in production?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if manufacturer offsets or eliminates carbon emissions.
When it comes to Carbon Neutral Production, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Biodegradable Components
Does it include biodegradable components?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Shows if components naturally break down after disposal.
When it comes to Biodegradable Components, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Renewable Energy Manufacturing
Is it manufactured with renewable energy?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Indicates if renewable energy is used in production.
When it comes to Renewable Energy Manufacturing, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Take-Back / Recycling Program
Does it have a take-back program?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Shows if brand offers a recycling or buy-back program.
When it comes to Take-Back / Recycling Program, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Sleep Number c4 Plastic-Free Packaging
Does it use plastic-free packaging?
No 0Votes Sleep Number c4
Yes Mattresses in this range
Confirms if packaging avoids single-use plastics.
When it comes to Plastic-Free Packaging, Sleep Number c4 ◉ is worse than Mattress in this range ◉ .
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Surveys
Because hot takes deserve votes.
Sleep Number c4 Comfort Level
How comfortable is this mattress for everyday use?
Super comfy — Feels like sleeping on a cloud 0Votes
Pretty comfortable — Good for most sleep positions 0Votes
Decent comfort — Works for short naps 0Votes
A bit too firm — Not very cozy 0Votes
Hard and uncomfortable — Feels stiff all night 0Votes
Sleep Number c4 Durability
How long does this mattress last before showing wear and tear?
Extremely durable — Over 12 years 0Votes
Long lasting — 9 to 12 years 0Votes
Good durability — 6 to 8 years 0Votes
Moderate lifespan — 3 to 5 years 0Votes
Very short lifespan — Less than 3 years 0Votes
Sleep Number c4 Firmness
How firm does this mattress feel when lying down?
Extra firm — Very rigid and supportive 0Votes
Firm — Strong support with little sink 0Votes
Medium — Balanced support and softness 0Votes
Soft — Gently cushioned 0Votes
Ultra soft — Sinks in deeply 0Votes
Sleep Number c4 Motion Isolation
How well does this mattress reduce movement transfer at night?
Excellent — Barely feel any motion 0Votes
Good — Only strong shifts are felt 0Votes
Decent — Minor movements are felt 0Votes
Somewhat poor — Frequent disturbance 0Votes
Very poor — Every movement is noticeable 0Votes
Sleep Number c4 Thickness
How thick is this mattress in height?
Extra thick — Over 15 inches 0Votes
Thick — 13 to 15 inches 0Votes
Medium — 10 to 12 inches 0Votes
Thin — 6 to 9 inches 0Votes
Very thin — Less than 6 inches 0Votes
Sleep Number c4 Temperature Regulation
How well does this mattress stay cool at night?
Very cool — Always stays fresh 0Votes
Cool — Feels comfortable most nights 0Votes
Average — Neutral temperature 0Votes
Somewhat warm — Gets a little stuffy 0Votes
Very hot — Traps a lot of heat 0Votes
Sleep Number c4 Ease of Setup
How easy was it to set up this mattress at home?
Super simple — Done in no time 0Votes
Pretty easy — Quick setup without stress 0Votes
Manageable — Took some effort but fine 0Votes
A bit difficult — Needed extra help 0Votes
A total hassle — Took forever to set up 0Votes
Sleep Number c4 Design Appeal
How attractive does this mattress look in a bedroom?
Beautiful design — Looks high-end 0Votes
Stylish — Adds to the room look 0Votes
Decent — Matches most rooms 0Votes
Okay — Nothing special 0Votes
Plain and boring — Looks cheap 0Votes
Sleep Number c4 Pricing
How would you rate the price of this mattress?
Great value for money 0Votes
Pretty good price 0Votes
Fair deal 0Votes
Kinda pricey 0Votes
Crazy expensive 0Votes
Sleep Number c4 Edge Support Strength
How sturdy are the edges of this mattress when sitting or lying near the side?
Excellent edge strength — No sinking at all 0Votes
Strong edge support — Slight compression only 0Votes
Moderate edge support — Noticeable sinking 0Votes
Weak edge support — Feels unstable at sides 0Votes
Supermod 
Moderator 
