King Size Mattress [Upgraded Strengthen], 12 Inch Gel Memory Foam Hybrid King Mattress in a Box with Independent Pocket Spring, Extra Edge Support, Medium Firm, Back Pain Pressure Relief
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Availability:
20 left in stock
Arrives
Wednesday, Jul 23
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Color: White
Item Thickness: 12.0 Inches
Size: King (U.S. Standard)
Features
- Deep Sleep Overnight: King mattress features multiple layers of high-density memory foam and enhanced independent pocket spring to fully care for your body curves, relieving muscles pressure and back pain, allowing you to enjoy quiet and comfortable sleep.
- Fresh & Breathable: Mattress king size includes gel memory foam and porous breathable fabric, which increases breathability by 30%, promotes airflow and provids refreshing cooling effect, it keeps you from feeling overheated during the night. Enjoy all-night comfort and relaxation, you will wake up feeling refreshed.
- Upgraded Edge Support: Our king size mattresses have upgraded the built-in Pocket Springs to make mattress more stable. Unlike the traditional, we offer mattress with the addition of 3 coils to targeted and stable support, prevent you from sliding off the edge of the mattress during night sleep.
- Quiet Motion Isolation: Our king bed mattress is equipped with individual pocket springs and slow rebound memory sponge that effectively absorb and isolate vibration noise, ensuring undisturbed sleep even if your partner turn over during sleep. If you are still struggling with this problem, please consider our mattress.
- King Mattress In A Box: Our 12 inch hybrid king mattress offers 100 night trial and 10 years of support, mattresses have been tested for stress and support. Please maintain a safe distance during unboxing to avoid injury from the mattress rebound. After unboxing, please allow 72 hours for the mattress to fully expand.
Brand: EEN EEN SLEEP
Size: King (U.S. Standard)
Product Dimensions: 80"L x 76"W x 12"Th
Top Style: Pillow Top
Number of Layers: 8.0
Fill Material: Independent Pocket Springs, Gel Memory Foam, Memory Foam
Weight Limit: 1500 Pounds
Color: White
Coil Type: Pocketed Coil
Model Name: EC Hybrid Mattress
Product Dimensions: 80 x 76 x 12 inches
Item Weight: 67.5 pounds
Manufacturer: Eensleep
Country of Origin: Indonesia
Item model number: EC 12K
Date First Available: June 16, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Jul 23
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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Top Amazon Reviews
Like the title says. I have a winkbed and this is, I'd say, 3/4ths as good as the two thousand dollar winkbed. I don't expect it to last as long, btu with it costing legitimately one tenth what the winkbed was....if it wore out every other year I'd still save a thousand bucks a decade. That said, if you're heavier (I'm 6ft 4 and 340lbs) you will probably find this to me more on the medium, to maybe even medium soft side. If you have back pain, this won't cut it if your'e in that weight class. Below 300lbs, you should be safe, and below 250, you're golden for this to be and feel like the medium firm it's advertised as. Thats something true of almost any mattress though....if you weigh a ton, you need firm to feel medium, etc. Because our bodies put a lot more force on these. Anwyay, again though, unbeatable price, excellent mattress, and I LOVE that they even included a little letter opener like tool to make sure you open it easily without tearing it....not even winkbed did that!!!
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Reviewed in the United States on June 24, 2025 by Glass
I’ve had the same mattress for around 16 years. During that time, its been filled with Polyfill stuffing, as well as a few mattress toppers, to extend its life. Since my bed frame has the wooden planks under the mattress, the overall feeling is somewhat firm. Once the new memory foam mattress was unpacked, it took around a day and a half to fill out to its normal size, which initially made me worry. When the mattress finally filled out, it was time for the moment of truth. Lying down on a new mattress, which isn’t as firm as my previous one, felt far more soothing and peaceful. With chronic pain, actual sleep feels like a luxury, so resting is sometimes the next best thing. This is literally where the mattress excels. It’s amazingly comfortable to simply sit on, with just the right amount of memory foam to contour you perfectly. My couch has a slightly larger than king sized pull out bed, which is also predominantly made out of memory foam. The only thing that holds it back is how thin the mattress has to be to fold up neatly. After finally getting to experience a memory foam mattress that has a substantial amount of cushioned springs underneath it, it’s easy to see why people love memory foam mattresses. Even though this mattress is technically labeled as a hybrid, its actual memory foam layer is just as thick as my couch’s pull out mattress. The additional rest that I’ve had allows me to feel more refreshed in the morning. Now after DJing late at night, I look forward to laying down in my bed after work instead of sitting on my couch to unwind for awhile. If you don't need a very firm mattress, and soothing comfort is what you’re looking for, then you’ve found it, and that definitely deserves 5 stars.
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Reviewed in the United States on May 18, 2025 by Art-of-Zen Digital Art-of-Zen Digital
First, I am shocked at how well this mattress is made, for a bed-in-a-box. The photos in the listing shows a thick, quality mattress. And they are completely accurate, compared to what you actually get. When I unboxed it, and then carefully cut the plastic wrapping, the thing literally sprung out at me - knocked off my glasses. There was no harm done - it just surprised me. Be careful! My son uses this mattress on his bed now. I would say it's about an 8 out of 10 on firmness. I'm at an age where I personally need a firm mattress - I sleep fine on a soft mattress, but my back doesn't like it, the next day. What is unique about this mattress, compared to other mattress-in-a-box options we have tried, is that this one has sturdy springs built into the bottom section of it. So really, what you are getting is a mattress and box spring. I was totally impressed and surprised with that part. Overall, the value you get is incredible for the price. If you don't mind a slightly firmer mattress, this is a great option. I will keep an eye on this brand in the future. My guess is that they will be making noise in the mattress industry.
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Reviewed in the United States on June 5, 2025 by DomCasual
This mattress is a really nice hybrid, meaning you get the stability and support of springs and the softness and comfort of memory foam all in one package. I got this full-sized one for a guest bedroom that's very small, and I have to say I almost like it better than my $1,200 name brand mattress in the master bedroom. Even my sleep-tracking watch agrees, giving me a higher sleep score on this mattress than I've had in weeks. It provides even solid support for my back, and comfortable, soft cushioning. As a heavier side sleeper, I sometimes struggle to find a mattress that works for me, but this one is comfortable and sleeps cool, something that all-foam mattresses generally fail at. This is my third bed in a box and second recently, and set up is very similar to all the others. It comes tightly compressed and rolled, and to set it up you simply put it near where it needs to be and cut the plastic open. Like other mattresses of this type it will unroll pretty quickly with some force, so don't have any breakable objects, pets, or small children nearby when you unpack it. It's described as a pillow top mattress, and while the top foam is styled as a pillow top, it really is the only foam above the springs. If you're expecting a traditional pillow top, that's not quite what you're getting here. Still, this is an excellent value mattress.
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Reviewed in the United States on May 12, 2025 by L. Williams
The packaging is in a compressed box, and it takes a few hours to fully expand after opening, but there is no pungent smell, and the material feels relatively solid. The sleeping feeling is medium to hard. When you lie down, there is support but it is not stiff, especially the back feels supported. I used to have back pain easily, and it has been significantly relieved after using it for a few days. The gel memory foam does not make you feel stuffy when you lie down, and it is also very comfortable to use in summer. The independent pocket springs in the mattress can reduce the shaking when turning over, and it will not disturb someone on the other side to turn over. The edge support is indeed strengthened, and you will not collapse when you sit on the edge of the bed. The overall structure feels very stable
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Reviewed in the United States on June 3, 2025 by Robert L. K