Top5 Review

Eight Mattress Review

Eight Mattress was founded in 2016 and is a pioneer in the smart mattress industry. Named Eight after the ideal number hours of sleep you should get each night, an Eight mattress is unlike any of the other boxed mattresses on the market for one simple reason: It’s a smart mattress.

If you don’t know what a smart mattress is, think of it like a smart phone: It’s an enhanced mattress that uses technology to track your sleep patterns, tell you how you’re doing and show you how you can improve. An Eight mattress can track two people’s sleep patterns and can also adjust to you and your partner’s bed preferences. An Eight mattress tracks:

  • Time asleep
  • Bedtime
  • Wake-up time
  • Tosses and turns
  • Sleep breaks
  • Heart rate
  • Respiratory rate
  • Light and deep sleep
  • Bed temperature
  • Room temperature

In addition to tracking your sleep, Eight’s technology can make adjustments to things like temperature while you sleep in efforts to help you sleep more soundly.

The Eight app links to your smartphone, much like a Fitbit, and delivers insights such as “You got 7 hours and 30 minutes of sleep last night. That is 30 minutes more than your average this month” or “Your percentage of REM sleep was 18% last night. This is lower than the healthy range of 20-25%. Lack of REM is caused by lack of sleep and can lead to fatigue and in the long-term, memory loss. Try sleeping 30 minutes more tonight.”


Eight mattress

  • Three mattress options with customizable firmness
  • Smart mattress helps you track your sleep
  • 100-night sleep trial
  • 10-year warranty
  • Free shipping and returns
  • 10 percent discount to college students; military service members, veterans, spouses, and dependents; and police officers, firefighters and emergency medical technicians (EMTs)


  • More expensive than other boxed mattress companies
  • Mattresses do not come in twin or full sizes
  • If you’re not up-to-date with technology or are app-averse, this isn’t the bed for you.

Product Features

Eight mattress what is it made of

Technology aside, the Eight mattress comes in three different versions, each with the option to customize firmness. The Saturn and Jupiter Mattresses are both foam options, while the Mars is a hybrid of foam and coil.

The Saturn Mattress: Eight Mattress describes its Saturn Mattress as “a medium-firm mattress paired with smart cover for sleep enhancement.” It’s constructed with a top layer of memory foam followed by a bottom layer of transitional polyfoam. Below, the support core is comprised of high-density polyfoam.

The Jupiter Mattress: Eight Mattress describes its Jupiter Mattress as “a medium firmness mattress paired with smart cover for sleep enhancement.” Three layers of foam make up the top comfort system: a top layer of reactive memory foam that contours to your body, a middle layer of contouring memory foam for additional comfort and a bottom layer of transitional polyfoam. Below these layers rests a support core of high-density polyfoam.

The Mars Mattress: Eight’s Mars Mattress is the only non-foam option it offers. This hybrid mattress is its most expensive mattress line, and Eight describes it as “a medium-soft mattress paired with smart cover for sleep enhancement.” The top layer, its comfort layer, features a two-inch layer of memory foam and a bottom layer of transitional polyfoam. Unlike the other Eight mattresses, the Mars’s support core is constructed with a top layer of individually wrapped coils and a base layer of high-density polyfoam.

All three of these beds are considered medium-firm and rank a 6.5 on the firmness scale.

Product Stats

Eight mattress layers of foam

As mentioned, Eight mattresses come in three different versions: the Saturn, Jupiter, and Mars. Saturn and Jupiter are foam mattresses, while Mars is a hybrid. Eight Mattress does not make twin or twin XL; its smallest mattress is a full.

The Saturn Mattress

Eight’s Saturn Mattress is its most affordable option. It offers the option of a 10- or 11-inch height.

The Jupiter Mattress

Eight’s Jupiter mattress is its middle line in terms of affordability. Similar to the Saturn, it is a foam mattress option that can be customized to either 10 or 11 in.

The Mars Mattress

Eight’s line of Mars mattresses is its most expensive line. Unlike the Saturn and Jupiter options, the Mars is a hybrid, built of foam and coils. It too can be customized to either 10 or 11 in.

Full Mattress

A full mattress is Eight’s smallest option. It measures 54 in. x 75 in. x 10 or 11 in.

Queen Mattress

Eight’s queen mattress measures 60 in. x 80 in. x 10 or 11 in.

Saturn King Mattress

Eight’s king mattress measures 76 in. x 80 in. x 10 or 11 in.

California King Mattress

The largest of Eight’s mattresses is the California king, which measures 72 in. x 84 in. x 10 or 11 in.

Delivery and Setup

Eight provides free U.S. shipping. Your mattress will be delivered within 7 to 10 business days after purchase.

Financing Options

Eight understands that mattresses are expensive, which is why it allows its customers the opportunity to finance their purchase via Affirm.

Policies and Warranties

Eight Mattress smart mattress app

Eight stands behind its mattresses 100 percent and wants you to be happy. As such, they have a generous sleep trial and warranty program.

10-Year Limited Warranty

Eight offers a 10-year limited warranty on its mattresses and a one-year warranty on its smart cover. It will repair or replace all mattresses that are deemed defective and cover costs of repairing or replacing the mattress. The owner, however, is responsible for covering transportation, handling and inspection charges.

The smart system is not protected under the mattress warranty. It has its own one-year warranty.

100-Night Sleep Trial

What happens if you’re not 100 percent satisfied with your Eight mattress? Return it! For free. Eight has a 100-night sleep trial, which means you can sleep on your mattress for 100 nights to see if it’s the right mattress for you. If you decided it’s not comfortable or you’re not using the technology components as much as you’d thought and would prefer a non-smart mattress, no problem. You can return it and receive a 100 percent refund.

Final Verdict

Should you get an Eight mattress? If you’re a technology fiend and love being up-to-date with the latest trends, then you should consider testing out an Eight mattress. However, we at Top5 feel that an iWatch can provide some of the same sleep tracking. The final decision is your call.

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