Search  for anything...

Cool Gel 12 Inch King Mattress Memory Foam Medium Firm, King Size Memory Foam Mattress Cooling, Made in the USA, 12" Depth with Pressure Relief, CertiPUR-US Certified No Fiberglass, CoolGel Bed

  • Based on 57,588 reviews
Condition: New
Checking for the best price...
$388.00 Why this price?
Save $461.00 was $849.00

Buy Now, Pay Later


As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

90-day refund / replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Friday, Apr 17
Order within 2 hours and 38 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Size: King


Style: 12-inch


Features

  • Ergonomic Support & Comfort: Designed with a high-density foam base & breathable comfort foam layer, this memory foam mattress adapts to your body for superior support. It evenly distributes weight, reduces pressure points, and enhances relaxation.
  • Pressure-Relieving Medium Firm Support: This medium firm king memory foam mattress offers high-density support that cradles pressure points, promotes spinal alignment, and reduces discomfort, making it ideal for back, side, and stomach sleepers.
  • Breathable Open-Cell Design for Cooling: Features a ventilated open-cell structure that enhances airflow and heat dissipation. This king bed mattress ensures a cool and comfortable sleeping environment all night long, preventing overheating.
  • Proudly Made in the USA: Our king mattress bed is expertly crafted with eco-friendly, CertiPUR-US certified materials - free from harmful chemicals or fiberglass. Enjoy premium comfort, safer sleep, and peace of mind night after night.
  • CertiPUR-US Certified: Fiberglass-free & certified for durability, emissions, and performance. Our luxury medium firm mattress king meets strict standards for emissions, durability, & performance, offering peace of mind with every night's sleep.
  • Available in Multiple Sizes: Cool Gel Memory Foam Mattress King dimensions: 80" x 76" x 12-Inch. Our Memory Foam Bed Mattresses are available in California King, King Mattress, Queen, Full Mattress, Twin XL, & Twin Mattress as well as 8, 10, 12, & 14-inch Depths.

Description

Experience ultimate comfort with the best Cool Gel 12-Inch Medium Firm King Memory Foam Mattress in a box, available on amazon in California King, King, Queen, Full, Twin, and Twin XL sizes. Our Memory foam mattress king features a luxurious high-density foam base & breathable comfort foam layer, this matress contours to your body’s shape while regulating temperature for a cooler, undisturbed sleep. This king cooling mattress features high-density memory foam which provides essential pressure relief, supporting proper spinal alignment and promoting a deeper, more restful night’s sleep. The breathable open-cell structure enhances airflow, keeping you cool and refreshed. This fiberglass-free memory foam king mattress meets CertiPUR-US standards for durability, performance, and emissions, ensuring a safe and healthy sleep environment. Simple to set up - just unbox and let it expand naturally. Available Callifornia King Bed Mattress, King Bed Mattresses, Bed Queen Size Mattress, Full Mattress, Twin Bed Mattress, and Twin XL. Colchones de espuma queen. cali king, king foam mattress, full size, twin, and twin xl. CoolGel Mattress Memory Foam for the entire family, from twin size to cali king size.

Brand: COOL GEL


Size: King


Product Dimensions: 80"L x 76"W x 12"Th


Item Firmness Description: Medium Firm


Top Style: Tight Top


Cover Material: Polyester


Number of Layers: 3


Fill Material: foam


Weight Limit: 1000 Pounds


Special Feature: Hypoallergenic


Item Firmness Description: Medium Firm


Number of Layers: 3


Weight Capacity Maximum: 1000 Pounds


Additional Features: Hypoallergenic


Construction Type: Memory Foam


Is Customizable?: No


Portable: No


Is Foldable: No


Size: King


Item Dimensions L x W x Thickness: 80"L x 76"W x 12"Th


Item Depth: 12


Item Dimensions: 80 x 76 x 12 inches


Cover Material: Polyester


Fill Material: foam


Product Care Instructions: Spot Clean Only. A mattress protector is always recommended to protect your mattress from spills or stains. See Manufacturers Care Instructions Tag for further details.


Mattress Comfort Layer Material: Gel Memory Foam


Material Type: Foam, Memory Foam


Brand Name: COOL GEL


Age Range Description: Adult


Model Name: Cool Gel


Product Benefits: Pressure relief, cooler sleeping surface, reduced motion transfer, back pain relief


Model Number: 410079-1160


UPC: 849986009504


Global Trade Identification Number: 04


Manufacturer: Classic Brands


Item Type Name: Bed Mattress Conventional


Included Components: Classic Brands Cool Gel Ventilated Memory Foam 12-Inch Mattress | CertiPUR-US Certified | Bed-in-a-Box, King


Unit Count: 1.0 Count


Manufacturer Warranty Description: 10 year warranty.


top-style: Tight Top


Color: White


Style Name: 12-inch


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Apr 17

Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • If you prefer a mattress that's not "firm"...
Size: King Style: 14-inch
For years we had been sleeping on an old inner spring mattress with an inexpensive 4" foam topper. It was VERY SOFT, so much so that getting out of bed was sometimes an issue. Plus I often woke up with shoulder or neck pain. FYI, I'm a side sleeper. And lately, my sleeping's just been lousy. I expect Covid-related anxiety is party to blame. Regardless I decided I wanted a new mattress. I decided on a bed in a box. I got one for both of my kids over the years and they seemed happy. Plus, there are very well reviewed products out there for way less than traditional beds. Lastly, return policies often seemed too good to be true (see more on this below). After spend days reading hundreds of reviews and watching videos, I opted for a Tuft & Needle Mint. It cost about $1K. Easy ordering, arrived promptly, set up easily, and looked great. It was rated "firm." Well, my wife HATED it. Truth be told, she didn't give it a fair try. She kind of said she wouldn't like it before it arrived, said she didn't like it after night 1, and after night 2 said she was up all night with back pain. FWIW, this mattress should have relieved her back pain, not added to it, based on firmness and the fact that she's a back sleeper. Didn't matter. Her mind was made up. It had to go. So I called T&N on day three and they were FANTASTIC. Refunded my purchase price IMMEDIATELY and said I should give it to a local charity or, failing that, give it to a friend, family member, or neighbor in need. The return policy that I thought "too good to be true" turned out to be 100% true. Good on them! I gave it to a family in a neighboring town that lost all of their possessions to a house fire. I ordered the 2.0 via Amazon because it was the more "plush" of the options and because of the literally thousands of positive reviews. Oh, the fact that the price was less than half of the T&N didn't hurt. It arrived in about 8-9 days (my only complaint). Very large box that I once again had to navigate to the second floor. Popped it open and enjoyed watching the inflating process (again). After figuring out which side was front and back we placed it in place and let it "breath" for a couple of hours. With chemical smell to keep me off it, I put a cover and sheet on it and slept on it last night. It's definitely on the plush side. I wouldn't want it any softer. But I actually found it more comfy than the 2x more expensive mattress that preceded it. "They" say soft is good for side and stomach sleepers (which I am) and they appeared correct. I only had one night on it but I'm sure it'll be fine for me. My wife joins me on it tonight and we'll have to see her reaction. Should she not like it I'll just get her a 2" topper for her side to make it softer. You can't see the actual mattress so I can't comment on its looks or fit and finish. The cover isn't at taught as the T&N's cover and the materials not as rich feeling, but it doesn't feel cheap. As a bonus, it come with two "bonus" memory foam pillows and though it did smell a little when I woke up my head was on one of them and not one of my "old" pillows. I can't speak to its return policy and hope I don't have to. But I am comfortable saying (pun intended) that this is a nice, inexpensive option for someone who likes a softer mattress. ... show more
Reviewed in the United States on July 31, 2020 by Bwater Evan

  • Perfect Short Queen Mattress – Cool, Supportive, and Great Quality
Size: Short Queen Style: 8-inch
I’ve been really impressed with this Cool Gel 8” Short Queen Memory Foam Mattress. It arrived compressed in a box, and once opened it expanded quickly and was ready to use within a few hours. There was very little odor, which was a nice surprise compared to other memory foam mattresses I’ve tried. The medium-firm feel is just right. It has enough support to keep your back aligned but still provides that comfortable memory foam contouring. It relieves pressure really well around the shoulders and hips, making it comfortable whether you sleep on your back or side. One thing I really like is the cool gel layer. Memory foam mattresses can sometimes trap heat, but this one does a good job staying cooler throughout the night. The breathable cover also helps with airflow and feels soft to the touch. The short queen size fits perfectly in RVs or smaller spaces where a standard queen is too long, and the 8-inch profile still feels supportive without being overly bulky. Overall, this mattress offers excellent comfort, good support, and great value for the price. If you’re looking for a quality short queen memory foam mattress that sleeps cool and feels supportive, this one is definitely worth considering. Highly recommend. ... show more
Reviewed in the United States on March 14, 2026 by Riley Smith

  • Amazing Quality and PERFECT feel. Best value I've seen
Size: Queen Style: 10-inch
The media could not be loaded. This is the 2nd one of these mattresses I have purchased for my home in the past several months. I LOVE IT! I ordered a queen size for a guest room, and realized that the mattress was better than the one I currently had in my own room. For the price... this completely took me by surprise. Coming from the mattress industry on both the retail sales AND manufacturing end, I am very familiar with this manufacturer and have purchased their products with confidence over the years. (Also check out their Cool Gel pillows.. best I've ever used). For this price, I was expecting a great quality GUEST ROOM mattress, but what I got was a lush feeling, top of the line feeling product. See notes below This video (under 4 mins) walks you through the complete process from how the mattress is shipped from the Manufacturer, how to properly open and set up, as well as a full description of materials, quality, and my experience with the mattress. Delivery Method: This mattress is delivered roll pack compressed. Meaning it is sealed air tight in in plastic, and rolled for easy shipping. I love this because it fits through doorways easily, and more importantly for me, stays nice and clean! Unpacking: The outer package is cardboard, the plastic casing is inside, its very easy to remove both. Just make sure you cut away from the fabric so you don't ruin your mattress (explained in the video) Look: 10.5" profile is a nice looking mattress. VERY soft lush ticking (fabric) on top that is nice, breathable and stretchy. Fancy looking grey knit border is a nice modern touch. The feel: This to me, although very subjective, is the most important part of mattress selection. I've always liked this company's product because of their support. I'm roughly 210lbs and this mattress doesn't budge when I lay down on it. I get a nice durable support. The top is NOT rock hard though. It feels very fluid and comfy. I guess the best description would be "just enough mush" to feel nice on my shoulders and hips. They ventilate the foam so it doesn't feel like traditional sticky memory foam. Overall, I think this is one of the best values I've purchased on the web. Really great product and totally worth way more than they're listing it for. ... show more
Reviewed in the United States on April 29, 2015 by Nick

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...