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The Mars
- Twin XL
- Twin
- Full
- Queen
- Twin XL - 39 X 80 X 11 in.
- Twin - 39 X 75 X 11 in.
- Full - 54 X 75 X 11 in.
- Queen - 60 X 80 X 11 in.
Select a size
FREE SHIPPING
FREE RETURNS
10 YEAR WARRANTY*
TRY IT FOR 100 NIGHTS
If you don't sleep better in the first 100 nights, you can request a full refund. It's easy. No re-stocking fees, no return shipping or diposal fees.
"This is the most comfortable mattress I've ever owned! Plus, it's much more affordable than some of the other companies out there."
- Kayah, Eight customer
A PERFECT MEDIUM FIRM
Not too firm. Not too soft. A 5 on the firmness scale, with 10 being the firmest.

Developed with more than 200 billion data points and 10 million hours of sleep analyzed
TRY IT FOR 100 NIGHTS
If you don't sleep better in the first 100 nights, you can request a full refund. No re-stocking fees, no return shipping or disposal fees.
"I haven't slept this soundly in years."
- V. Lax, Eight customer
A PERFECT MEDIUM FIRM
Not too firm. Not too soft. A 5 on the firmness scale, with 10 being the firmest.

Measurements and dimensions
- Full: 54" x 75" x 10"
- Queen: 60" x 80" x 10"
- King: 76" x 80" x 10"
- California King: 72" x 84" x 10"
10 inches tall
Sensors and technology
Smart cover:
- Piezo sensors
- Bed temperature sensors
- Heating capabilities
Hub:
- Room temperature sensor
- Light sensor
App compatibility
iOS and Android
Requirements
Wi-Fi connection
iOS 9 or later, or Android 5 or later
Power
Compatible with 110V and 220V
Cable
Standard U.S. two pin plug
Warranty
100-night trial, free returns
Mattress: 10-year limited warranty
Technology layer: 1-year limited warranty
Country of origin
Mattress designed and assembled in the U.S.
Technology layer designed in California, assembled in China.
Shipping details
Free U.S. shipping and returns
Mattress ships in a 46" x 16" x 16" box
Technology layer ships in a 19.5" x 15.5" x 10.25"
box
Certifications
Mattress contains a fire retardant barrier to comply with regulations. This material, otherwise known as an FR sock, is a fabric that encases our materials. It helps to smother and subdue a potential fire from spreading. Each of the four foams are CertiPUR-US certified. They meet program standards for content, emissions, and durability, and are analyzed by independent, accredited testing laboratories. CertiPUR-US approved foams are: made without ozone depleters, PBDE flame retardants, mercury, lead and other heavy materials; made without formaldehyde, phthalates regulated by the Consumer Product Safety Commission; have low VOC (volatile organic compound) emissions for indoor air quality (<0.5 parts per million).
Developed with more than 200 billion data points and 10 million hours of sleep analyzed
"There is no question that Eight provides the most advanced technology for sleep tracking on the market."
- Mattress Clarity
Starts at $749