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90K+5-star ratings · Cool Gel line

Cool Gel Memory Foam 12-Inch Mattress

Three layers of infused cool gel, breathable poly foam and high-density base foam disperse heat and conform to your body, under a knit cover with waterfall edges and charcoal gray side panels.

Cooling5 of 5
Firmness3 of 5
Support4 of 5

In stock Delivered in 2–3 business days

Select Size Size Guide

Sold-out sizes are greyed out. Every size in stock ships free.

Sale price $479.99 Regular price $519.99 Save $40 · 8% off Sale price already applied. No code needed.
Free Shipping100% money back guarantee

Free delivery in 2–3 business days to your door, in a compact box.

Return it within 100 days of the order date. Not right? We'll take it back with no hassle.

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Over 90,000 5-Star Ratings Across Platforms1.5M+ Mattresses Purchased

The CoolGel Difference

This mattress is packed with features made to help you sleep better every night. Here's what makes it special:

Premium cooling systemStay cool from sunset to sunrise with layers that fight off heat.
Multi-zone support for perfect alignmentGives your body the right support, right where you need it.
Hotel-grade luxury comfortSuper soft and cozy, like sleeping in a great hotel bed.

Cool Gel mattresses are built to help you sleep cooler and more comfortably, night after night. Each option features our gel-infused memory foam that draws away heat, combined with a supportive base that keeps your spine happy. Choose the Classic all-foam design for a soft, hug-like feel, or upgrade to Premium for a hybrid with extra support from wrapped coils.

All our mattresses contain no fiberglass and are CertiPUR-US certified for peace of mind. Whether you are a side, back, or combo sleeper, Cool Gel makes it easy to get cool, pressure-relieving rest at a price that works for real families.

12″Total height
2.5″Cooling Gel Foam on top
6″High Density Base Foam
Luxury-PlushFeel

Sizes: Twin, Twin XL, Full, Queen, King, Cal King.

We believe your mattress-buying experience should be as smooth as your first night's sleep. Every Cool Gel mattress ships free to your door with no hidden fees and no surprises.

When your mattress arrives, setup is simple. Unbox it, place it on your bed frame or foundation, and allow it to naturally expand. It begins inflating right away; give it time to reach its full shape and comfort level. No tools, no assembly. Open, relax, and let the mattress do the rest.

We want you to fall in love with your mattress. That's why every Cool Gel mattress comes with a 100-day return policy from the order date. If you're not fully satisfied, start a return in our Returns Center and we'll take it back with no hassle.

And because we stand behind our materials and craftsmanship, your mattress is backed by a 10-year warranty that covers manufacturing defects, including indentations deeper than 1.25 inches. Whether it's night one or night 1,000, we're here to help.

Size guide

Every size is 12 inches tall. Add that to the height of your frame, foundation or adjustable base to picture the finished bed.

SizeWidth × lengthPrice
Twin39" × 75"$299.99
Twin XL39" × 80"Sold out
Full54" × 75"$329.99
Queen60" × 80"Sold out
King76" × 80"$479.99
Cal King72" × 84"$489.99

Need a hand choosing? Ask our team.

Compare every size to scale

Hear what people are saying

Photos and words from customers who sleep on a Cool Gel every night, on the site and on Amazon.

Julie's Cool Gel mattress with her white cat asleep on it

My New Favorite Mattress

"Everyone who sleeps on it asks me where we got it and are blown away when I tell them the price. It never got a weird saggy middle and never smelled."

JulieVerified buyer
Kevin's Cool Gel mattress on a tufted bed with a grey comforter

Unbeatable Price

"The biggest thing that I'm impressed with is I only paid $400 for the new mattress versus $4000 for a new Tempur-pedic. The cool gel mattress has yet to get warm which is another thing I needed. I like a cool mattress."

KevinVerified buyer
Desiree's Cool Gel mattress on a green headboard bed with patterned pillows

One Month Update

"Love it! love it! Love it! Comfortable I can even lay on my stomach with no pain on my knee. I'm now doing my therapeutic exercises for my knee on this mattress and relieved because I can."

DesireeVerified buyer
Rhonda T's Cool Gel mattress, photographed at home

Twenty years on the old one

"I’m someone who doesn’t like to make big purchases, so I’d had the same mattress for more than 20 years. I finally realized it was time to upgrade…"

Rhonda TAmazon, verified purchase
The shipping is on usFree, no-contact delivery Cool sleep every nightBuilt-in cooling memory foam No hidden nastiesAlways fiberglass free Unbox in minutesEasy, fast setup Try it at home100-day returns Real help, real peopleFriendly support when you need it
12-inch profile layer diagram: 2.5-inch cooling gel memory foam, 3.5-inch supportive poly foam and 6-inch high-density base foam, with the CertiPUR-US seal
CertiPUR-US certifiedFiberglass free

Assured Comfort, Certified Quality

12 inches, three layers, one job: keep you cool and supported all night. Tap a layer to see what it does.

Buy Now In stock · ships free

When your mattress holds onto heat, you can end up tossing and turning or waking up sweaty, especially if your room gets warm.

Gel foam helps by drawing heat away from your body and letting cool air flow, so you wake up feeling fresh instead of hot.

Some mattresses can feel hard or uncomfortable, making it tough to relax and fall asleep. That means you might toss and turn, trying to find a soft spot.

Poly foam gives the mattress a plush, gentle layer that helps your body settle in and get comfy right away.

Have you ever laid on a mattress and just sunk straight to the ground?

Base foam makes sure you don’t sink straight to the ground when lying on your mattress, keeping proper support all the way through.

Why Cool Gel Beats the Rest

Same gel foam, same 100-day returns and warranty on every size. Here is how that stacks up against a typical mattress-in-a-box.

Feature Cool Gel Memory Foam Other Brands
Advanced Gel CoolingYesStandard Foam
Pressure-Relieving SupportYesVaries by Model
100-Day ReturnsYesLimited Returns
Free & Fast DeliveryYesVaries by Brand
1.5M+ Happy CustomersYesUnverified Claims
10-Year WarrantyYesOften Shorter
Choose your size Twin from $299.99 · Free 2-Day Shipping · 100 days to decide

How Your Sleep Gets Better Each Week

A new mattress takes a few weeks to break in and settle to your body. Here’s what most people notice along the way.

A woman asleep on her side on a Cool Gel mattress, smilingWeeks 1–3Weeks 4–7Week 8+

Your body is getting used to the new feel, and you’re already waking up less hot.

The first few nights can feel a little firm while the foam breaks in. It softens a bit more each night, and the cooling gel is at work from night one.

  • Let it fully expand before the first night
  • Use breathable sheets so the gel can do its job
"Proper support for your body. Orthopedic support": support for head, neck and shoulders, reduced pressure points on hips and on knees, beside a corner of the mattress

Wake Up with Less Pain, Guaranteed

If you are not feeling better and sleeping with less pain, return your mattress within 100 days of the order date and we will give you your money back.

Full refund100-day returnsHassle-free returns

Got Questions? We Have the Answers

Got questions about sleep, setup, or our mattresses? You're not alone. Here are answers to the things real people ask us most, so you can shop and sleep with total confidence.

Most people get used to their new bed in about 2–6 weeks as both your body and the foam settle in.

Nope. Our mattresses contain no fiberglass and every foam layer is CertiPUR-US certified, so it is made without ozone depleters, heavy metals, formaldehyde or PBDE flame retardants, with low VOC emissions.

Absolutely. Every Cool Gel mattress comes with a 100-night risk-free trial. Sleep on it, feel the difference, and if you're not completely satisfied, you can return it, no questions asked.

Yes. The gel-infused, open-cell top layer pulls heat away from your body and lets air move through the foam, so it keeps regulating temperature even when the room is warm. A breathable sheet helps it work best.

Every mattress is delivered straight to your door in a compact box within 2–3 business days of placing an order, all for free. You'll get a tracking number as soon as it ships.

Yes. Simply unbox your Cool Gel mattress, unroll it on your frame or foundation, and let it fully expand. Just unbox, relax, and get ready for a cooler, more comfortable night's sleep.

The 12-Inch Luxury CoolGel comes in Twin, Twin XL, Full, Queen, King and Cal King. Open the size guide for exact dimensions.

Manufacturing defects, including visible indentations deeper than 1.25 inches when the mattress is used on a supportive frame or foundation. Claims are simple: send us a few photos and the law tag, and we take it from there.

Still have a question? Support is available Monday to Friday, 8am–8:30pm ET.

1.5 million+ happy sleepers

Ready for your coolest, comfiest sleep ever?

Give yourself the sleep you deserve with Cool Gel. Order now and wake up rested, cool, and pain-free.

  • Fiberglass free
  • Stays cool
  • Free, fast shipping
  • No weird smell
100-Day ReturnsMade in the USA10-Year Warranty
A woman sleeping comfortably on a Cool Gel Ultimate mattress