COOLMI King Size Mattress, 14 Inch Hybrid Memory Foam Mattress in a Box, Pressure Relief for Back Support, Medium Firm, Individually Pocket Springs, 100-Night Trial & CertiPUR-US Certified,Grey King
Condition: New
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$41.67
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Learn more about financing & leasing here.
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90-day returns
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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.
Arrives
Jun 20 – Jun 22
Size: King
Style: 14 Inch
Features
- COMFORTABLE SUPPORT: King size mattress use a unique combination of pocketed coils and gel memory foam with 6 times more motion isolation than traditional springs to support the natural curves of the spine, relieve pressure, and promote better sleep positions. Reinforced edge support enhances durability and stability for mattress king size.
- BREATHABLE & HEALTHY: COOLMI king hybrid mattress are made from premium fabrics that are skin friendly, comfortable, and breathable, with layers of gel memory foam and carefully designed pocketed spring gaps for king size mattress in a box optimal airflow and reduced heat retention for a cool, comfortable night's sleep.
- MOTION ISOLATION & MEDIUM FIRMNESS: The 14 inch king mattress is built with high quality pocketed coils and high density foam to provide the perfect combination of softness and support, medium firm mattress king effectively releases pressure and relieves fatigue while absorbing noise and vibration for a calmer, undisturbed night's sleep.
- CERTIPUR-US CERTIFIED: Enjoy a comfortable, healthy night's sleep on a fresh, odor free mattress with this king matress made of CertiPUR-US certified premium foam that is free of harmful substances and fiberglass, suitable for all people (including pregnant women and children),king spring mattress allows you to use it with peace of mind, providing better sleep for you and your family.
- HASSLE-FREE PURCHASE: King bed mattress is compressed and packaged in a box that requires no complicated assembly. After unpacking, please wait a while for it to fully unfold.COOLMI Hybrid memory foam mattress fits most bed frames. If you have any questions, please feel free to contact our customer support team!
Brand: COOLMI
Size: King
Product Dimensions: 80"L x 76"W x 14"Th
Item Weight: 92 Pounds
Item Firmness Description: Medium Firm
Top Style: Euro Top
Cover Material: Polyester Blend
Number of Layers: 2
Fill Material: Gel Memory Foam, High Density Foam
Special Feature: Breathable, Durable, Hypoallergenic, Low Motion Transfer, Pressure Relief
Product Dimensions: 80 x 76 x 14 inches
Item Weight: 92 pounds
Manufacturer: COOLMI
Item model number: CD-1011
Date First Available: August 14, 2025
Age Range Description: Adult, KId,Baby
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Jun 20 – Jun 22
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.
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
Learn more about financing & leasing here.
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Top Amazon Reviews
Size: Twin
Style: 12"
I’m really happy with this twin mattress so far! It’s firm but still very comfortable and supportive — the perfect balance. I also love how high and thick it is, especially considering how compact it was when it arrived in the package. It expanded quickly and didn’t take long at all to fully take shape. My daughter has only had it for a couple of weeks, but it already feels sturdy and durable. Definitely a great buy!
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Reviewed in the United States on January 29, 2026 by Imunah Yahwah Imunah Yahwah
Size: Twin
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Great quality and very comfortable will now purchase a queen
Reviewed in the United States on February 17, 2026 by magaulke
Size: Twin
Style: 12"
Decompressed easily. No odd smells. It is more on the firm side. I have it as a gift and the person loved it. So far, so good.
Reviewed in the United States on January 1, 2026 by koffey99
Size: Twin
Style: 12"
Kids love it
Reviewed in the United States on February 3, 2026 by Raff
Size: Twin
Style: 12"
Bought this for an extra bed on our First floor for a surgery recovery and the Matress is so comfortable. The Matress is soft while still being firm. The edges are strong and don’t collapse when you sit on it. The price is fabulous for the quality.
Reviewed in the United States on February 26, 2026 by Ann E
Great price and a very comfy bed! These new hybrids-in-a-box are the best thing ever! We replaced our Sealy hybrid with this and we're VERY happy with it. The brand name beds are pricey and heavy - these mattress in a box deals are really amazing. Even if we have to replace in 5 yrs rather than 15-20, it's still worth it. There is no smell and it's ready to go as soon as you take the wrap off. Perfectly medium firm. Excellent support for side sleepers. Love it!
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Reviewed in the United States on October 10, 2025 by misangela
Size: Full
Style: 12 Inch
I have insurance on this and I might had to send it back it’s supposed to be a full bed. You look like a twin.
Reviewed in the United States on February 16, 2026 by Audrey Thompson
Very nice for the money I have no complaints
Reviewed in the United States on February 7, 2026 by Justin