King Size Mattress [Enhanced], 12 Inch King Mattress In A Box, Hybrid Mattresses With Gel Memory Foam & Independent Pocket Springs, Cooling, Additional Support, 365-Night Trial, Medium Firm
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Availability:
Unavailable
Item Firmness Description: Medium Firm
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
- 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
Brand: EEN EEN SLEEP
Size: King (U.S. Standard)
Product Dimensions: 80"L x 76"W x 12"Th
Item Weight: 58 Pounds
Item Firmness Description: Medium Firm
Top Style: Euro Top
Cover Material: Polyester
Number of Layers: 8.0
Fill Material: Gel Memory Foam, Independent Pocket Springs, Memory Foam
Weight Limit: 1500 Pounds
Product Dimensions: 76 x 80 x 12 inches
Item Weight: 58 pounds
Manufacturer: Eensleep
Item model number: EB12K-7
Date First Available: June 16, 2025
Frequently asked questions
This product is currently out of stock. Please check back later for shipping info.
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.
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Top Amazon Reviews
Item Firmness Description: Medium Firm
Item Thickness: 12.0 Inches
Size: King (U.S. Standard)
Amazing mattress love it so comfy totally recommend
Reviewed in the United States on February 2, 2026 by It looks alot better in the picture there are no feathers and the trim is a small lining of faux fur wish it was a little fluffier and had feathers not just fur
Item Firmness Description: Medium Firm
Item Thickness: 12.0 Inches
Size: King (U.S. Standard)
This is a marvel of science. Somehow it is both firm and cushy. It molds to your body when sleeping. Though when I get to close to the edge of the bed it compresses and I feel like I'm going to fall. Though I didn't actually fall. Be careful when unwrapping the bed. It comes compressed. When taking off the wrap it opens really quickly.
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Reviewed in the United States on January 16, 2026 by sczrhands
Item Firmness Description: Medium Firm
Item Thickness: 12.0 Inches
Size: King (U.S. Standard)
Bought it for my in laws. Not only is it affordable but it’s been(according to my in laws) extremely comfortable to sleep on. It’s not to firm or to soft. It’s just the right amount of firmness. It’s a little on the heigh side for my mother in law but she loves it. She said she eye level with her tv now. Zero noise from the mattress as far as we’ve noticed. It’s definitely a king size bed and exactly what they needed. Will be buying ourselves one come tax season to upgrade our queen.
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Reviewed in the United States on October 24, 2025 by jocelyne carbajal
Love this mattress! So far no sinking. So comfy for those who love a firm mattress! I love the reinforced edges!
Reviewed in the United States on January 8, 2026 by _V_
We bought this mattress to replace thin cheap one in toy hauler. My goodness, I have a lot of back issues and I love this mattress. Most comfortable camping yet!!
Reviewed in the United States on December 8, 2025 by Amazon Customer
Item Firmness Description: Medium Firm
Item Thickness: 12.0 Inches
Size: King (U.S. Standard)
One of the worst mattresses I’ve purchased. Not firm at all !! Size is fine but the mattress durability definitely won’t last with how not firm it is. You just sink into it
Reviewed in the United States on December 31, 2025 by LaTeef Cox
Item Firmness Description: Medium Firm
Item Thickness: 12.0 Inches
Size: California King
Good for the money but it's not that great. The edges break down immediately and it's not as comfortable as it looks, especially if you have a bad back like myself.
Reviewed in the United States on December 13, 2025 by ethan decaprio
Item Firmness Description: Medium Firm
Item Thickness: 12.0 Inches
Size: King (U.S. Standard)
The bed is comfortable, the sides are a little weak. Did not have a smell. Came early. Over all I like it
Reviewed in the United States on January 21, 2026 by M Matlock