12 Inch King Size Hybrid Mattress in a Box – Medium Firm Memory Foam & Pocket Coils – Cooling Comfort, Motion Isolation & Pressure Relief
Condition: New
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Extended holiday returns
Returnable until Jan 31, 2026 Learn more
Returnable until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: Returnable until Jan 31, 2026
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
Thursday, Dec 25
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Size: King (U.S. Standard)
Style: 12 inch
Features
- Cool & Breathable Tencel Knit Cover for Refreshing Comfort The premium Tencel knit fabric feels silky-soft and gentle on the skin. It wicks away moisture and promotes airflow, keeping you cool and dry all night. Combined with cooling gel memory foam, this mattress offers a fresh, comfortable sleep environmentideal for hot sleepers or those sensitive to heat.
Brand: Mambrc
Size: King (U.S. Standard)
Product Dimensions: 80"L x 76"W x 12"Th
Top Style: Euro Top
Cover Material: Tencel
Number of Layers: 2
Fill Material: Gel Memory Foam & Pocketed Coils
Color: Green
Coil Type: Pocketed Coil
Model Name: 12K
Product Dimensions: 80 x 76 x 12 inches
Item Weight: 72 pounds
Manufacturer: Mambrc
Item model number: MAM-12K
Date First Available: July 30, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Dec 25
Yes, absolutely! You may return this product for a full refund within 30 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.
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- Financing through Apple Pay
Learn more about financing & leasing here.
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Top Amazon Reviews
Size: Queen (U.S. Standard)
Style: 14 inch
I've been sleeping on this mattress for two nights now, and I've loved it. It arrived well packaged, expanded quickly, and had no strong odors. It's firm, yet feels very comfortable thanks to the gel-infused foam layer, which also maintains a cool temperature all night. The quality of the materials is noticeable, and it doesn't move at all when my partner turns over, which is a huge plus. Since I've had it, I've been sleeping much better and without back pain. It's truly worth it; it exceeded my expectations.
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Reviewed in the United States on October 23, 2025 by Nazaret Oberto
Size: Queen (U.S. Standard)
Style: 14 inch
This 14-inch queen hybrid mattress is a perfect blend of comfort and support. The cooling gel memory foam keeps me from overheating at night, and the zoned pocket coils give amazing lumbar support without any motion transfer. The edge support is sturdy, and every layer feels purposeful. I’ve been waking up refreshed and pain-free — highly recommend for anyone who wants a medium-firm, cool, and comfortable mattress!
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Reviewed in the United States on October 16, 2025 by Hasan
Size: King (U.S. Standard)
Style: 12 inch
I was honestly surprised at how comfortable this mattress is. It arrived well packed and was easy to set up. The medium-firm feel is just right not too soft, not too hard. I’ve been sleeping on it for a couple of weeks now and I wake up without the backaches I used to have. The combination of memory foam and coils gives good support while still feeling cushioned. For the price, the quality is much better than I expected. Definitely recommend it if you’re looking for a comfortable and affordable king size mattress. Perfect size and durable
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Reviewed in the United States on September 17, 2025 by MRG MRG
Size: King (U.S. Standard)
Style: 12 inch
This King sized medium-firm hybrid mattress was so easy to set up, expanded quickly, and is so comfortable! We slept on the mattress same night of set up, have been sleeping on for over a month, and have had no problems with sinking, have gotten great sleep, really takes the pressure off in the right areas! Quality product with a great price point!
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Reviewed in the United States on October 6, 2025 by Rthy
Size: King (U.S. Standard)
Style: 12 inch
The media could not be loaded. I recently purchased this king-size mattress and I’m very impressed! It’s supportive yet soft, with just the right balance of comfort and firmness. I’ve noticed a big improvement in my sleep quality—no more tossing and turning or waking up with back pain. The mattress expanded quickly after unboxing and had no strong odor. Plenty of space for two people to sleep comfortably. Great value for the price, highly recommend!
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Reviewed in the United States on August 30, 2025 by Kristina
Size: King (U.S. Standard)
Style: 12 inch
Mattress exceeded my expectations. It is comfortable, firm in the support but at the same time has the necessary softness to rest well. I noticed the quality of the material as soon as I saw and felt it. The value for money seems excellent to me, it also arrived well packaged and easy to install. Highly recommended for those looking for a restful sleep.
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Reviewed in the United States on October 2, 2025 by Citlali estrella Citlali estrella
Size: King (U.S. Standard)
Style: 12 inch
The media could not be loaded. I am extremely happy with this mattress! It arrived quickly, well-packaged, and was very easy to set up. The comfort level is just perfect — medium firm, supportive, yet soft enough to feel cozy. I noticed a big difference in my sleep quality right away. The memory foam and pocket coils really do a great job with motion isolation, so I don’t feel any movement when my partner turns over. The cooling feature is a huge plus, I never wake up overheated anymore. It looks high-quality and stylish as well. Overall, this mattress is an excellent value for the price, and I would absolutely recommend it to anyone looking for comfort and support.
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Reviewed in the United States on October 3, 2025 by Kristina
Size: Queen (U.S. Standard)
Style: 14 inch
I love the mattress, it is comfortable if you are a pure back sleeper, it is not soft enough for a slight sink when sleeping on your side. If sending it back wasn't such a hassle for me I would get something softer. However it is as ordered, I will still rate it four stars as I do sleep on my back and my side so it is half of what I expected
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Reviewed in the United States on October 10, 2025 by James Culbertson IV