Sleep Number Mattress Review: Test Lab Ratings

Overall Rating8.3

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Price Range: $999 – $13,799

Mattress Type: Adjustable Mattress

Firmness Options: Adjustable: Soft (3) to Firm (8)

At a Glance

An adjustable mattress that allows the user to customize the firmness of each side from soft to very firm. This is a great option for couples with different firmness preferences, and a wide range of options ensures most sleepers can find designs that meet their needs.

Ratings Summary

Motion Isolation

8/10

Edge Support

6.5/10

Temperature Control

8/10

Ease of Movement

7/10

Durability

7/10

Pressure Relief

8.5/10

Pros

• 
  Adjustable firmness settings for each side of the mattress
• 
  App-based controls are intuitive and user-friendly
• 
  Upgrades include active cooling features and zoned support

Cons

• 
  Limited edge support for most models
• 
  Expensive pricing and extra delivery fees

Sleeping Style and Body Weight

Sleep Number ComfortMode Collection

Sleeper Type

Under 130 lbs

130-230 lbs

Above 230 lbs

Side Sleepers

8/10

8.5/10

7.5/10

Back Sleepers

8/10

7.5/10

6.5/10

Stomach Sleepers

8/10

6.5/10

6/10

Sleep Number ComfortNext Collection

Sleeper Type

Under 130 lbs

130-230 lbs

Above 230 lbs

Side Sleepers

9.5/10

8/10

7/10

Back Sleepers

8/10

7/10

5.5/10

Stomach Sleepers

7.5/10

6/10

6/10

Sleep Number Climate Collection

Sleeper Type

Under 130 lbs

130-230 lbs

Above 230 lbs

Side Sleepers

9/10

8.5/10

7.5/10

Back Sleepers

8.5/10

7.5/10

7/10

Stomach Sleepers

7.5/10

7/10

6/10

Side Sleepers

Since Sleep Number mattresses are adjustable, they can accommodate a wide range of sleeper profiles. However, our hands-on tests show these adjustable mattresses are particularly well suited to side sleepers.

Sleeping on your side concentrates your body weight along that side, placing a great deal of pressure on your shoulders and hips. A mattress that’s too soft can cause your shoulders and hips to sag into the bed’s surface, forcing the spine out of alignment. However, a mattress that’s too firm does not offer enough cushioning and can create painful pressure points. Most side sleepers do well with a mattress that’s medium to medium firm.

The adjustable design of Sleep Number beds allows side sleepers to determine the right level of support for them. With the exception of the standard ComfortMode model, these adjustable mattresses also contain zoned transitional foam to push back against the extra weight in your midsection. Most side sleepers up to 230 pounds should be able to find an exceptionally comfortable setting on any Sleep Number mattress. Those who weigh over 230 pounds may want to consider a model with less cushioning material, which makes them less likely to sink excessively into their mattress.

Back Sleepers

Sleeping on your back creates pressure in the lumbar area. A mattress that’s too soft allows the hips to sink into the mattress excessively, disrupting spinal alignment and potentially causing back pain. However, a mattress that’s too firm causes the hips to sit on top of the bed, creating a gap between the lower spine and mattress surface.

Like our side sleepers, the back sleepers on our team were very impressed with Sleep Number’s mattress selections. With the ability to switch between soft, firm, and anywhere in between, each model provides a comfortable sleep surface for back sleepers. The zoned transitional foam found in most of these adjustable mattresses is also crucial for supporting back sleepers and preventing them from sinking too much.

Stomach Sleepers

Stomach sleepers are at a greater risk of back pain. Without enough support, your midsection can sink into your mattress, creating an unnatural U shape in the spine. Although stomach sleepers require a firmer sleep surface to maintain a good posture, most also prefer some cushioning.

We expect most stomach sleepers to prefer the moderate cushioning of ComfortMode mattresses over the plusher models with deeper comfort systems. Even with adjustable firmness, stomach sleepers may still sink too much on adjustable mattresses with thick comfort layers.

Mattress Performance

In addition to the hands-on feedback from our team, we conduct a number of quantitative tests in our Test Lab. The below ratings are based on the experience of our testers.

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Sleep Number Mattress Review Breakdown

Sleep Number currently offers seven different mattress models split into three mattress collections. Each model has a unique design, but all seven share the same basic foam-over-chamber construction.

The standard Sleep Number ComfortMode mattress is constructed with an adaptive polyfoam comfort layer over transitional polyfoam. With the upgraded ComfortMode Lux, the transitional layer is zoned to feel firmer and more supportive beneath the midsection.

The standard Sleep Number ComfortNext shares a similar design to the ComfortMode Lux, with a comfort layer of adaptive polyfoam over zoned transitional polyfoam. The ComfortNext Lux and ComfortNext Ultra build on this design by added a layer of microcoils to the comfort system, which provides extra airflow and cushioning for the torso and hips.

The Sleep Number ClimateCool also contains adaptive polyfoam in its comfort system, along with active heating and cooling panels that allow you and your partner to set a specific temperature for your respective sides of the bed. You can upgrade to the Sleep Number Climate360 — the brand’s priciest mattress — which adds ventilation channels to the comfort layers for additional airflow and cooling.

All Sleep Number mattresses are built with adjustable air chambers in their support cores. You can use the Sleep Number companion app to adjust the firmness settings and, on Climate models, temperature levels. The app is free to download and use.

Sleep Number ComfortMode Collection

Sleep Number ComfortNext Collection

Sleep Number Climate Collection

Sleep Number Mattress Sizing

Size availability varies by Sleep Number model. Twin, twin XL, and full sizes are only available with select ComfortMode and ComfortNext models. In addition to standard sizes, you can also choose from split king and California king styles. Additionally, “FlexTop” have top halves that can can be elevated or lowered using an adjustable bed while the bottom halves remain fixed.

Weight varies from model to model, so exact measurements are not available for any given bed. Queen-size Sleep Number mattresses typically weigh between 60 and 75 pounds.

Sleep Number ComfortMode Collection

Sleep Number ComfortNext Collection

Sleep Number Climate Collection

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