The Sleep Number i8 Smart Bed has adjustable firmness levels that make it ideal for couples with varying sleep preferences or as comfort needs change.

We've tested and reviewed products since 1936. Read CR's review of the Sleep Number 360 i8 Smart Bed mattress to find out if it's worth it.

Sleep Number is having their Fourth of July sale right now. You can save up to 20% on smart beds and snag some new bedding right now.

The Sleep Number c2 Bed matched the Sleep Number i8 bed Pillowtop, $3,000, in our tests for back and side support. Even better, we bought the Sleep Number c2 Bed on sale for $700.

The Sleep Number® i8 smart bed is the best bed for customizable firmness — save 30% this Cyber Monday.

Sleep Number beds feature adjustable firmness and integrated sleep tracking, but are they worth the premium pricing?

Sleep Number also offers higher-end beds with adjustable bases and vibration options, but the basic tech features are the same. The Sleep Number i8 remote control is also bare bones.

Sleep Number's extended Memorial Day sale ends tonight! Save up to 50% on smart beds, cooling pillows, bedding and more at this summer sale.

With almost 40 years of dedicated research behind it, its innovations in science-backed smart beds provide delicious, restful sleep that’s completely personalized.

Can't decide between an Eight Sleep or Sleep Number smart bed? We explore what to buy in this year's Labor Day sale.

Some people can be easily scared away by the cost of a Sleep Number smart bed, but you really need to look past the price and look at its long-term value.