Temperature balancing innovation

Sleep Number ® i8 bed is rated 3.9592760180995477 out of 5 by 221.
Rated 5 out of 5 by from Best mattress ever We've been sleeping on our sleep number bed for a month and I can honestly say it's the best mattress ever. You will never know how bad your mattress truly is until you've slept on a Sleep Number!
Date published: 2016-10-07
Rated 5 out of 5 by from Love Love our Sleep Number My husband is very warm blooded and I am on anti cancer meds so the topper is great at controlling our heat and cooling us this summer. Can't wait until winter to see it work.
Date published: 2016-09-30
Rated 5 out of 5 by from Best night sleep Been sleeping on it for a month and love it. Had a waterbed for 30 plus years and the sleep by number is so much nicer.
Date published: 2016-09-25
Rated 5 out of 5 by from Great bed We have had our bed for about 6 weeks and love it. Great bed we are both sleeping better and waking mor refreshed.
Date published: 2016-09-24
Rated 5 out of 5 by from Sleep great I was skeptical about this mattress when looking and deciding to buy but now I am sold. I sleep so well and love the ability to adjust the firmness based on how laborious my day was
Date published: 2016-09-13
Rated 5 out of 5 by from Cadillac of beds This is the best that I have ever bought you can go from any style you want from too soft to firm it is awesome
Date published: 2016-08-10
Rated 5 out of 5 by from Love it! I bought a King i8 over a month ago and I just love it! I sleep longer and wake rested, I don't want to get out of bed! My number is 85. My husband loves it also his number is 55.
Date published: 2016-08-04
Rated 5 out of 5 by from great, comfy bed! I bought the I8 about a month ago. My fiancé and I love it! Nifty features and very sturdy flex mattress!
Date published: 2016-07-23
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i8 Sleep Number® bed

This bed offers an exclusive PlushFit® layer for enhanced comfort and temperature balancing sleep surface that keeps you from sleeping too hot or too cool.



Allows you to adjust firmness, comfort and support on each side of the bed to your ideal Sleep Number® setting, and change it whenever you like.

SleepIQ® technology

Using sensors inside the bed, SleepIQ® technology tracks your breathing, heart rate and movement. Every morning your SleepIQ® score shows you exactly how you slept, so you can learn and make adjustments.

Temperature balancing sleep surface

Absorbs excess heat and releases it as you cool, so you sleep just right.


Duvet-style pillowtop is measured from the base to the highest loft of the mattress.

PlushFit foam comfort layer

Exclusive pressure relieving foam is soft and resilient for enhanced comfort.

7 zones of contouring support

Superior pressure relief and gentle support where you need it most: head, shoulders, lower back, hips, knees, lower legs, and feet

Soft, breathable knit fabric

Polyester/polypropelene blend is soft and breathable so you sleep comfortably.


FlexFit Adjustable Bases

Upgrade to an adjustable base to raise the head and/or foot of the bed and read, watch TV, or surf the web in ultimate comfort. Choose from three options when you customize your bed.

Sleep Number
Adjust Your Idea of Comfort
Firmer or softer? You both get to choose your ideal level of firmness, comfort and support–your Sleep Number® setting–and change it whenever you like.
SleepIQ® technology Included
The Sleep Number® bed with SleepIQ® technology inside tracks how well you sleep each night, giving you personal insights into your sleep.
Sleep Number
Discover your ideal bedtime, wake up time and how many hours you need for your best sleep.
The bed connects to your favorite apps so you'll know how life affects your sleep and how sleep affects your life.
SleepIQ® technology on the inside of the bed tracks how well you sleep each night
You'll learn what affects your sleep and the changes you can make to improve your SleepIQ score.
Sleep Number
Add a FlexFit adjustable base to any mattress.
Read, watch TV and surf the web in ultimate comfort. Our FlexFit adjustable bases include choices you’ll love, like Partner Snore technology and soft under bed lighting.
Sleep Number
Feel, see, and hear the difference
You'll only find Sleep Number® at a Sleep Number® store

Product Reviews

Product Reviews

Product Q&A

Product Q&A

Furniture not included.
Due to the cost of doing business in California, Performance, Memory Foam and Innovation Series Twin and Full mattresses incur a $50 surcharge; Queen and King mattresses incur a $100 surcharge. The surcharge will be added in your shopping cart after you enter your shipping address. Picture may not represent options selected.