Sleep Number mattresses
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Sleep Number is different from every other brand on findmattress.com: its beds use adjustable air chambers instead of a fixed foam or coil core. You choose a firmness setting, called your Sleep Number, on a 0 to 100 scale, and each side of the bed can be set independently.
The model on our site is the Sleep Number c2, the entry-level smart bed. It's 8 inches tall, with a ceramic-gel layer and a 2-inch breathable comfort layer over dual adjustable air chambers and a foam border. It includes auto-adjusting firmness and SleepIQ sleep tracking, and it's built around Sleep Number's own pump and base ecosystem.
Because firmness is user-set, there's no single firmness score. The best independent review we found is of an older c2 and is out of date, so our performance ratings are rough estimates from it: strong edges, little motion transfer and low bounce, with average cooling and pressure relief. The thin comfort layer is the main reason we're cautious about pressure relief for side sleepers.
Sleep Number lists the c2 queen at about $1,299. It comes with a 100-night trial and a 15-year limited warranty.
Who should shop Sleep Number? Couples who disagree on firmness, people whose comfort needs change, and anyone who wants built-in sleep tracking. Who should skip it? Solo sleepers happy with one firmness, side sleepers who need thick cushioning, and shoppers who don't want a bed with a pump and electronics.
See it compared in Sleep Number vs Tempur-Pedic, Saatva vs Sleep Number and Nectar vs Sleep Number, or take the mattress quiz.
Sleep Number mattresses we cover
Sleep Number c2
Adjustable air · Adjustable (Sleep Number setting per side)
- $1,299 queen
- 100 nights
- 15 years
- 8″ tall
The Sleep Number c2 is not a standard mattress. It's an adjustable air bed, Sleep Number's entry-level model. Inside are dual air chambers you inflate or deflate with a pump, setting each side anywhere from 0 to 100. On top sit a ceramic-gel layer and a 2" comfort layer, and it includes SleepIQ sleep tracking. Because you set the firmness, our 5.5 rating is only an estimate. This Sleep Number c2 review finds it best for couples who disagree on firmness.
Sleep Number vs other brands
Questions about Sleep Number
How does a Sleep Number bed work?
Instead of springs or a solid foam core, a Sleep Number bed has adjustable air chambers under a comfort layer. A pump inflates or deflates them to your chosen setting on a 0 to 100 scale. Queen and larger beds have two chambers, so each partner sets their own side. The c2 can also auto-adjust as you sleep.
Is the Sleep Number c2 good for couples?
It's built for couples who disagree on firmness, because each side adjusts independently. By the specs it also has strong edges and little motion transfer, though those ratings are estimates from an older review. If you and your partner like the same feel, a fixed mattress with strong motion isolation may give you more comfort for the money.
What is Sleep Number's trial and warranty?
The c2 comes with a 100-night trial and a 15-year limited warranty, according to Sleep Number's 2026 product page. Older reviews mention different warranty terms, so rely on the current page. Since the bed relies on a pump and electronics, read what the warranty covers for those parts specifically.