EEN EEN SLEEP 12 Inch King Size Mattress, Firm King Mattress in A Box, Hybrid Mattresses with Gel Memory Foam & Pocket Springs, Zoned Pressure Relief, Upgrade Support, CertiPUR-US, 365-Night Trial
Condition: New
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100-day returns
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100-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:
20 left in stock
Arrives
Wednesday, Dec 24
Recently Viewed
Color: Grey
Item Thickness: 12.0 Inches
Size: King (U.S. Standard)
Features
- Luxurious & Comfortable Sleep ExperienceEEN EEN SLEEP luxury hybrid king mattress is composed of multiple layers of high-quality memory foam and upgraded enhanced pocket springs. It provides the best support for your body, relaxes all muscles, relieves muscle soreness and back pain, eliminates fatigue, and brings you an unprecedented ultimate comfortable sleep
- More Comfortable & Stable SupportThe king size mattress has upgraded and enhanced pocket springs to make its support more comfortable and stable. The seven-zone support provides effective pressure relief throughout your body. The additional edge support in the outer three rows not only prevents you from falling off the edge of the mattress but also enhances the overall firmness of the mattress, making it more durable
- Ultimate Motion IsolationThe combination of the enhanced Pocket Springs equipped in the mattress king size and the high-quality slow-rebound memory foam effectively isolates the movement transmission and noise of the partner. It is suitable for any sleeping position and can bring you undisturbed deep sleep
- Top-Grade Safe And Breathable MaterialKing bed mattress only uses top-quality safety materials, free of fiberglass and unpleasant odors. The built-in gel memory foam effectively promotes air circulation, expels excess body heat, and keeps you cool throughout the night without feeling stuffy
- King Size Mattress In A Box12 inch king size mattress measures 80"L x 76"W x 12"Th and has a maximum load-bearing capacity of 1500 pounds. It is compatible with all king bed frames. For the convenience of transportation, we have compressed the mattress intact into the box (please keep a safe distance when opening the box as the mattress may expand rapidly).
- Worry-Free & Professional Brand ServiceWe are a professional R&D and manufacturing company with many years of experience. Every mattress has passed authoritative quality inspection and is of excellent quality. We also offer 10 years of support and 365-night trial use. If you have any questions about the mattress, please feel free to contact our 24-hour online customer service at any time
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
Number of Layers: 8.0
Fill Material: Gel Memory Foam, High Density Foam, Memory Foam, Pocket Springs, Slow-Rebound Memory Foam
Weight Limit: 1500 Pounds
Special Feature: Breathable, Durable, Low Motion Transfer, Pressure Relief, Temperature Regulating
Color: Grey
Product Dimensions: 76 x 80 x 12 inches
Item Weight: 66 pounds
Manufacturer: Eensleep
Item model number: EB12K-7
Date First Available: June 16, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Dec 24
Yes, absolutely! You may return this product for a full refund within 100 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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- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
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Top Amazon Reviews
Color: Grey
Item Thickness: 12.0 Inches
Size: King (U.S. Standard)
This bed is firm and comfortable
Reviewed in the United States on October 10, 2025 by Raya Lo Zelle
Color: Grey
Item Thickness: 14.0 Inches
Size: King (U.S. Standard)
Amazingly comfortable! Great quality at a great price
Reviewed in the United States on October 9, 2025 by Wendy
How is this mattress so comfortable!!!!came in a bag, easily but carefully cut the bag open and let it lay out overnight before setting up the mattress with sheets. Mattress is sooo soft but just firm enough. Have been sleeping like a baby every night since day 1. Definitely recommend!!
Reviewed in the United States on August 23, 2025 by laurboh
I figured I'd show a close up corner of the bed (being made). This feels medium to me, which is normal as a 330lb 6ft4 guy. People above 250lbs usually feel a firmness one grade below the stated firmness. Also, my dog, who is old, arthritic, and doesn't like to sleep on anything too firm, still enjoys this, so it's a win/win. Firm enough for me, soft enough for her to not avoid sleeping on the bed. Don't mind the wary look on her face - she just can't stand cameras. 10/10 her and I are both so happy with this bed! Oh, and as one bit of advice? Put it on the bedframe and then let it unfold & expand. SO much easier that way. AND if you don't have a solid base (your bed base is bars or something with more than 2 inch spaces between) you NEED a more soild base for this. You can get a cheap 10 dollar sheet of plywood from a hardware store, and they'll usually cut it to size for you, too. Put that down before you put down the bed and you're golden!
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Reviewed in the United States on July 6, 2025 by Glass Glass
I got this full size mattress and have been sleeping on it for a few months. It strikes a good balance between firm support and pressure relief, making it suitable for back and side sleepers. The combination of gel memory foam and pocket springs provides a comfortable, responsive feel, and the strong edge support allows full use of the mattress surface. Things I Like: Firm and supportive: Offers good spinal alignment and pressure relief. Hybrid design: Gel memory foam + independent pocket springs provide both comfort and bounce. Strong edge support: Great for sitting or sleeping near the edge without sagging. Convenient delivery: Comes compressed in a box; easy to set up. Concerns: Initial smell: Minor off gassing odor when first unpacked, dissipates within a few days. Firmness: Might feel too firm for people used to plush mattresses. Heavy: Moving or rotating the mattress can be difficult due to its weight.
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Reviewed in the United States on August 27, 2025 by Amazon Customer
Color: Grey
Item Thickness: 14.0 Inches
Size: King (U.S. Standard)
My boyfriend hates it, says it’s super stiff and hard. I will admit it is harder than I thought it would be but for my back issues it’s helpful. I feel this is a decent mattress for the price.
Reviewed in the United States on October 1, 2025 by Kim G.
This is a quality and dependable full-size mattress that was the perfect size and has been great for my comfort and helping to manage pain levels when I get up in the morning. A better quality sleep has really helped with back relief and I couldn't be happier. It was a good price and I think it was definitely worth it.
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Reviewed in the United States on July 23, 2025 by Nick
Color: Grey
Item Thickness: 12.0 Inches
Size: King (U.S. Standard)
I wanted a firm mattress. This is soft. Now I'm stuck with it because there's no way I can ship it back since it's unrolled. It would probably be comfortable to others, but I have medical issues and need the support. What a waste of money.
Reviewed in the United States on September 16, 2025 by Emily