Mercer Cool Gel Memory Foam Innerspring Hybrid 12-inch Mattress

Mercer Cool Gel Memory Foam Innerspring Hybrid 12-inch Mattress image 1

Mercer Cool Gel Memory Foam Innerspring Hybrid 12-inch Mattress image 2

Mercer Cool Gel Memory Foam Innerspring Hybrid 12-inch Mattress image 3

Mercer Cool Gel Memory Foam Innerspring Hybrid 12-inch Mattress image 5

Mercer Cool Gel Memory Foam Innerspring Hybrid 12-inch Mattress image 6

100 Nights Free Trial

10-Year Warranty

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Cool Gel 12 inch Hybrid - Twin

Cooling
Firmness
Support

Select Size Twin 15% OFF

Which Mattress Size Is Right For You?

Size	Width	Length
Twin	39”	75”
Twin XL	39”	80”
Full	54”	75”
Short Queen	60"	75"
Queen	60”	80”
King	76”	80”
California King	72"	84"

Need help selecting the right size?

Our customer service is available 7 days a week

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100% money back guarantee

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 system

Stay cool from sunset to sunrise with layers that fight off heat.

Multi-zone support for perfect alignment

Gives your body the right support, right where you need it.

Hotel-grade luxury comfort

Super soft and cozy, like sleeping in a great hotel bed.

Product details

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.

Shipping and setup

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. The mattress will begin inflating right away, but we recommend giving it the full 24 hours to reach its ideal shape and comfort level. No tools or complicated assembly required. Just open, relax, and let the mattress do the rest.

Returns and warranty

We want you to fall in love with your mattress risk-free. That’s why we offer a 100-night trial on every Cool Gel™ mattress. If you’re not fully satisfied, we’ll take it back with no hassle and no restocking fees.

And because we stand behind the quality of our materials and craftsmanship, your mattress is backed by a 10-year warranty. Sleep easy knowing we’ve got your back.

Whether it’s night one or night 1,000, we’re here to help.

Mercer Cool Gel Memory Foam Innerspring Hybrid 12-inch Mattress

$279.99

$329.99

As seen in

Assured Comfort, Certified Quality

1 2 3 4 5

Assured Comfort, Certified Quality

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1 Gel Foam

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.

2 Poly Foam

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.

3 Supportive Poly Foam

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.

4 Wrapped Coils

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.

5 Base Foam

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

Base foam ensures that you don't sink straight to the ground when laying on your mattress, ensuring proper support all throughout.

1 Gel Foam

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.

2 Poly Foam

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.

3 Supportive Poly Foam

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.

4 Wrapped Coils

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.

5 Base Foam

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

Base foam ensures that you don't sink straight to the ground when laying on your mattress, ensuring proper support all throughout.

Hear what people are saying

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."

Julie

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."

Kevin

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."

Desiree

The shipping is on us Free, no-contact delivery

Cool sleep every night Built-in cooling memory foam

No hidden nasties Always fiberglass free

Unbox in minutes Easy, fast setup

Try it at home 100 nights risk-free

Real help, real people Friendly support when you need it

The shipping is on us Free, no-contact delivery

Cool sleep every night Built-in cooling memory foam

No hidden nasties Always fiberglass free

Unbox in minutes Easy, fast setup

Try it at home 100 nights risk-free

Real help, real people Friendly support when you need it

The shipping is on us Free, no-contact delivery

Cool sleep every night Built-in cooling memory foam

No hidden nasties Always fiberglass free

Unbox in minutes Easy, fast setup

Try it at home 100 nights risk-free

Real help, real people Friendly support when you need it

Why Cool Gel Beats the Rest

Other Brands

Advanced Gel Cooling

Standard Foam

Pressure-Relieving Support

Varies by Model

100-Night Risk-Free Trial

Limited Trial

Free & Fast Delivery

Varies by Brand

1M+ Happy Customers

Unverified Claims

10-Year Warranty

Often Shorter

How Your Sleep Gets Better Each Week

Every new Cool Gel mattress needs a little time to break in and match your body. Here’s what most people experience as the weeks go by, so you know exactly what to expect as your sleep keeps getting cooler and more comfortable.

Week 1

Week 4

Week 8+

WEEKS 1 - 3
WEEKS 4 - 6
WEEKS 8+

Your body is getting used to the new mattress and you start waking up less hot and restless.

You might notice a few nights of breaking in, but cooling comfort and support are already making sleep easier. Each night, the mattress softens a bit more and helps you relax faster.

Your sleep is deeper, longer, and more consistent. You wake up feeling more refreshed and less sore.

By now, your body and mattress are in sync. The foam has adjusted to your natural shape and sleeping style, delivering balanced pressure relief and alignment. You’ll likely notice longer periods of uninterrupted sleep and fewer aches in the morning.

Your mattress feels like it was made for you. Each night is cooler, more restorative, and easier to fall asleep.

At this point, the mattress feels like second nature. The cooling gel works seamlessly with your body to regulate temperature, while the support layers adapt perfectly to your sleep habits. Falling asleep is quicker, staying asleep is easier, and waking up energized becomes your new normal.

The shipping is on us Free, no-contact delivery

Cool sleep every night Built-in cooling memory foam

No hidden nasties Always fiberglass free

Unbox in minutes Easy, fast setup

Try it at home 100 nights risk-free

Real help, real people Friendly support when you need it

The shipping is on us Free, no-contact delivery

Cool sleep every night Built-in cooling memory foam

No hidden nasties Always fiberglass free

Unbox in minutes Easy, fast setup

Try it at home 100 nights risk-free

Real help, real people Friendly support when you need it

The shipping is on us Free, no-contact delivery

Cool sleep every night Built-in cooling memory foam

No hidden nasties Always fiberglass free

Unbox in minutes Easy, fast setup

Try it at home 100 nights risk-free

Real help, real people Friendly support when you need it

Wake Up with Less Pain, Guaranteed

Try Cool Gel for 100 nights. If you are not feeling better and sleeping with less pain, we will give you your money back.

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 are all CertiPUR-US Certified for maximum safety and comfort.

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.

Absolutely, our innovating cooling gel is designed to keep optimal temperature regulation, even in the heat.

All our mattresses get delivered straight to your door in a compact box within 2-3 business days of placing an order, all for free!

Yes! Setup is a breeze. Simply unbox your Cool Gel™ mattress, unroll it, and let it fully expand for 24 hours. Just unbox, relax, and get ready for a cooler, more comfortable night’s sleep.

Our mattresses come in all standard sizes: Twin, Twin XL, Queen, King, California King

1.2 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

Buy Now

100 Nights Free Trials
Made in the USA
3-Year Warranty