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
100-Day Returns
10-Year WarrantyFree Shipping
Mercer Cool Gel Memory Foam Innerspring Hybrid 12-inch Mattress
A wrapped-coil innerspring under gel-infused memory foam, finished with a quilted pillow-top knit cover, corded edges and knit side panels for breathability.
Cooling4 of 5
Firmness3 of 5
Support4 of 5
In stock Delivered in 2–3 business days
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.
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
1″Gel Foam on top
8″Wrapped Coils
Medium-FirmFeel
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.
Hear what people are saying
Photos and words from customers who sleep on a Cool Gel every night, on the site and on Amazon.
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
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
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
CertiPUR-US certifiedFiberglass free
Assured Comfort, Certified Quality
12 inches, five 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.
Without the right balance, soft foams can feel too sinky and unstable.
The supportive poly foam adds a firmer transition layer beneath the memory foam, giving your body the lift and alignment it needs, without sacrificing comfort.
Old-school spring mattresses can creak, bounce, or transfer motion too easily when someone moves.
Individually wrapped coils respond to your body’s movements while minimizing motion transfer, providing personalized support, better spine alignment, and a quieter, more stable sleep experience.
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 |  |
Other Brands |
|---|---|---|
| Advanced Gel Cooling | Yes | Standard Foam |
| Pressure-Relieving Support | Yes | Varies by Model |
| 100-Day Returns | Yes | Limited Returns |
| Free & Fast Delivery | Yes | Varies by Brand |
| 1.5M+ Happy Customers | Yes | Unverified Claims |
| 10-Year Warranty | Yes | Often Shorter |
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.
Weeks 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
The foam has settled to your shape, and you’re falling asleep faster with fewer wake-ups.
By now the comfort layer has fully broken in. Pressure on your hips and shoulders eases, and most people stop noticing the mattress at all.
- Rotate it head to foot once this month
- Still deciding? You have 100 days from the order date
This is your new normal: cool, comfortable sleep you don’t have to think about.
The gel keeps drawing heat away all night, every night, and the foam keeps you comfortably supported.
- Rotate it every 3–6 months to keep the feel even
- Spot-clean the cover as needed
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
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
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 ReturnsFree Shipping10-Year Warranty
