12 Inch King Size Mattress, Firm King Mattress In A Box, Hybrid Mattresses With Gel Memory Foam & Independent Pocket Springs, Pressure Relief, Cooling, Strong Edge Support [Upgraded Strengthen]
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30-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.
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Availability:
Only 1 left in stock, order soon!
Arrives
Sunday, Aug 24
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Color: Grey
Item Thickness: 12.0 Inches
Size: King (U.S. Standard)
Features
- Luxurious & Comfortable Sleep Experience - The unique seven-zone support system of king mattress provides targeted stress relief for your whole body, eliminates fatigue, perfectly solves muscle soreness and back pain, and enables you to no longer suffer from insomnia due to pain
- More Comfortable & Stable Support - The king size mattress has been Upgrade Strengthen with the Independent Pocket Springs, providing it with more stable and comfortable support. The additional edge support on the outer three rows not only prevents you from rolling off the edge of the mattress but also enhances the overall firmness of the mattress, making its service life longer
- Ultimate Motion Isolation - The mattress king size is equipped with high-quality independent pocket springs and slow-rebound memory foam, effectively eliminating the movement transmission and noise of your partner. It is suitable for any sleeping position and can bring you undisturbed deep sleep
- Healthy & Safe Materials - Hybrid mattress king only uses top-notch safe materials, without fiberglass or unpleasant odors. The built-in gel memory foam effectively promotes air circulation and expels excess body heat, keeping your sleep extremely refreshing throughout the night
- King Size Mattress In A Box - King mattress 12 inch measures 76"W x 80"D x 12"H, with a maximum load capacity of 1500 pounds. It is compatible with all king Beds. We compress the mattress unscathed into one box for your convenient transportation (For a perfect sleep experience, it is recommended to allow the mattress to expand for 24 to 72 hours. Please keep a safe distance when opening the package as the mattress may expand rapidly)
Brand: EEN EEN SLEEP
Size: King (U.S. Standard)
Product Dimensions: 80"L x 76"W x 12"Th
Top Style: Euro Top
Cover Material: Polyester Blend
Number of Layers: 8.0
Fill Material: Independent Pocket Springs, Gel Memory Foam, Memory Foam
Weight Limit: 1500 Pounds
Special Feature: Temperature Regulating, Durable, Pressure Relief, Breathable, Low Motion Transfer
Color: Grey
Product Dimensions: 80 x 76 x 12 inches
Item Weight: 69 pounds
Manufacturer: Eensleep
Country of Origin: Indonesia
Item model number: EB 12K
Date First Available: June 15, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Aug 24
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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Learn more about financing & leasing here.
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Top Amazon Reviews
Color: Grey
Item Thickness: 12.0 Inches
Size: California King
I live our new mattress, I had spine surgery and I can tell you this mattress was perfect on my spine. I slept so good and I like the spring feel and the edges that help me and my husband who is handicap to get up faster from our bed. I rate this mattress above and beyond and for the price a perfect 10 stars ⭐️
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Reviewed in the United States on January 2, 2025 by Betty guerra
Color: Grey
Item Thickness: 12.0 Inches
Size: Full
I love the firmness of the mattress, the size and the thickness. I purchased the 12 inch full sized version and after waiting two days for it to fully form, I experienced the most peaceful night of rest. I am a 270 pound man who stands 6 foot 2 and a full time student who also helps to take care of my aged Mom. I needed a comfortable mattress for my back. The individual pockets of coils mixed with foam feel amazing. I did not want to get out of bed to write this review but I had to. Thank you to all who honestly reviewed this item. Your reviews helped me to make my decision. I am purchasing another for my guest bedroom. My only worry is that they will never want to leave. BTW I was worried about my regular full sheet sets would not fit but they do. Thank you Eeen Eeen!
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Reviewed in the United States on January 10, 2025 by Rodney H Wilson Rodney H Wilson
Color: Grey
Item Thickness: 12.0 Inches
Size: Full
I purchased this mattress for our guest room. This is a great quality for the price point. It came quickly and didn’t take long to expand to the full size. Our guests have commented how comfortable the bed has been and they have had no issues sleeping on it. The prior mattress felt like a rock, but this one has just the right amount of firmness and has kept its shape.
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Reviewed in the United States on November 19, 2024 by Amazon Customer
Color: Grey
Item Thickness: 14.0 Inches
Size: King (U.S. Standard)
I needed a mattress for the spare room and didn’t want to spend a fortune. Mattress comes in a pretty small box so it’s surprising when you unpack and it expands. This mattress is great! It’s the spare room but I find myself going in there and laying on it often. It is a very comfortable mattress. Can’t believe for the price it is such good quality!
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Reviewed in the United States on December 24, 2024 by Denise LaPointe
Color: Grey
Item Thickness: 12.0 Inches
Size: California King
We replaced our waterbed mattress with the california king memory foam mattress. It is wonderful. The only thing different is there is no heater. Very easy setup and we slept in it less than 8 hours after setting it up. Great buy.
Reviewed in the United States on December 4, 2024 by Bonnie Livingston
Color: Grey
Item Thickness: 12.0 Inches
Size: Full
Great mattress that actually isn’t just a giant piece of foam.
Reviewed in the United States on January 9, 2025 by Jeremy Suhre
Color: Grey
Item Thickness: 14.0 Inches
Size: King (U.S. Standard)
This is the worst item I have ever purchased. I should have read the reviews closer. It is not a firm mattress as it is described. It is incredibly bouncy, the sides have no durability and collapse when you attempt to get out of bed. (Picture yourself rolling onto the floor.). When you lay down in the bed it feels like you are falling into the floor with the mattress collapsing around you. I even purchased a box frame to go under it to build up the stability but it didn’t help enough to want to keep it. Tried to return this but you have to roll it up and get it to fit into its original box. So now I am hoping someone will take it off my hands for free. What a complete waste of money! Don’t buy this you will regret it and won’t be able to return it.
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Reviewed in the United States on December 22, 2024 by S. Reed
Color: Grey
Item Thickness: 12.0 Inches
Size: Full
It is soft comfortable and worth the money
Reviewed in the United States on December 23, 2024 by Elizabeth