Sleepy's Cool Mattress Review

Updated May, 2021
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While Sleepys Cool Mattress is a fantastic mattress at this price point, our #1 pick for 2021 is SAATVA mattress. Saatva is a luxury mattress shipped to your door (unlike other bed in a box brands dropped off on your doorstep) w/ FREE white-glove delivery & setup. They have over 50,000 5-star reviews, and they're incredibly comfortable (for all sleep positions).

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Bottom Line

Sleepy's Cool mattress is a cooling foam mattress sold through Mattress Firm online and in stores. It offers plush support and pressure point relief. It's special features include a phase-change gel foam layer, and a ventilated, cooling cover. The motion transfer is excellent, which makes it great for couples. Try the Cool mattress, today!

Get a Cool Mattress if...

  • You're a hot sleeper. The Cool mattress is specially designed to keep sleepers as cool as possible during the night.
  • You need good motion isolation. The Cool mattress has outstanding motion isolation. The mattress absorbs motion very well, giving you peaceful sleep.
  • You're looking for a quality foam mattress. The Cool mattress is an excellent choice for a foam cooling mattress. It's made form high-quality materials with special features to keep you cool while you sleep.

Skip a Cool Mattress if...

  • You're looking for a budget mattress. The Calm mattress is mid-tier priced for a foam mattress, and is made with high-quality materials. If you're looking for a cheap mattress, this isn't the model for you.


  • Certi-PURE certified.
  • Financing available through Mattress Firm.
  • Free delivery via Mattress Firm.
  • 120-night price guarantee through Mattress Firm.
  • Enjoy a 120-night sleep trial when purchased from Mattress Firm's website.


  • Warranty is only for 5 years.


The Cool mattress is made of high-quality foam and does a great job aligning the spine while you sleep. Phase-change gel top material adds pressure point relief as well as cooling effects. The support foam and memory foam layers provide a plush, soft feel. The ventilated cover keeps the mattress cool to the touch.

Despite how soft it is, we noticed there isn't much bounce to this mattress. This is probably due to the thick, high-density foam base.

We found the Cool mattress to be super soft and plush. We rank it 5.5/10 on our firmness scale. We recommend this bed for side sleepers.

Construction Key Points

  • The Cool mattress is 12" thick.
  • Sleepy's Cool model is a foam mattress.
  • Phase-change material gel top surface layer to dissipate heat.
  • Cover: A ventilated woven cover that is soft, inviting, and keeps cool.
  • First Layer: 3'' of contouring memory foam that alleviates pressure.
  • Second Layer: 9'' of high density support foam that cradles the spine.

Support & Motion Isolation

The Cool mattress has average edge support. The foam layers sink and collapse a little bit when sitting or lying on the edge. While not unpleasant, it can't provide a consistent feel from center to edge of the mattress.

Motion isolation is excellent with the Cool mattress. Multiple layers of foam and the gel top surface absorb motion transfer. Rest peacefully even next to a partner who tosses and turns a lot.

Noise is also kept to a minimum as the high-density foam base absorbs any sound from partner movements.

We recommend this bed for couples, as the motion isolation and cooling effects are very beneficial for sharing a bed with someone.

Reasons to Buy a Cool Mattress

  1. The Cool mattress is built with hot sleepers in mind. The foam is made to be very breathable, with phase-change gel foam to dissipate heat. The cover is ventilated which allows airflow between the materials.
  2. Good motion isolation is very important for couples with active sleepers. The feeling of your partner getting out of bed or tossing and turning is disruptive to sleep. The foam layers in this mattress do an excellent job of isolating most motion so both sleepers are able to rest undisturbed.
  3. If you want a quality foam mattresses, The Cool mattress is for you. With thick, foam layers, Certi-PURE certified materials, and great cooling features, it's a top choice.

Where can I find a great, affordable mattress (in 2021)?

If you're searching for an affordable mattress that offers a wide range of comfort and pressure relief, we've compiled a list of mattresses for you to consider:

  1. Saatva Mattress - fantastic for all sleep positions, and is rated our Best Mattress of 2021.
  2. Idle Sleep - great for responsive pressure relief.
  3. Puffy - feels like you're sleeping on a cool cloud (at a good price).
  4. Ghostbed - beautiful, plush cover w/ aerated latex and healthy spinal alignment.
  5. Winkbeds - 3-stage back relief with free shipping and returns.

Read our short, well-researched 10 Best Mattresses of 2021, here. Our ultimate goal is to help you pick your perfect mattress online, today!

Check Price →
Get $200 off, purchases over $1000!

Saatva is our top pick for the #1 mattress in 2020! They're a luxury mattress shipped with FREE white-glove delivery & setup (different than regular bed in a box brands put on your doorstep). They have over 50,000 reviews.

Check Price →
Get $200 off your order of $1,000 or more, today!