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King Size Mattress - 12 Inch Hybrid King Size Mattress in a Box, Upgrade Strengthen, Gel Memory Foam King Matress with Motion Isolation, Strong Edge Support and Pocket Springs, Medium

  • Based on 269 reviews
Condition: New
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$279.96 Why this price?

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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

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.

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Availability: Only 7 left in stock, order soon!
Fulfilled by Amazon

Arrives Tuesday, Dec 24
Order within 8 hours and 31 minutes
Available payment plans shown during checkout

Style: 12 Inch Medium


Size: King


Features

  • Breathable & ComfortableKing size mattress curated with high-end fabrics for a soft, silky touch. Exclusive knit fabric technology is both breathable and sweat-wicking and keeps you warm for the perfect sleep experience
  • Unparalleled Sleep EnjoymentMattress King size has a patented supportive technology that ensures every part of your body fits perfectly for unprecedented relaxation, effectively relieving fatigue and allowing you to have a better night's sleep
  • Perfect Scientific CombinationKing bed mattress is made of individually pocketed springs and multiple layers of premium memory foam, expertly layered in our high-quality memory foam and ultra-high-density base foam for ultimate support
  • King Mattress in a BoxUnlike the traditional 2 coils, we offer the Hybrid Mattress with the addition of 3 coils, which enhances the mattress's edge support and superior barrier against the effects of your partner's movement. Achieve a quiet and comfortable deep sleep

Brand: SIMARTH


Size: King


Product Dimensions: 79.92"L x 75.98"W x 12"Th


Top Style: Pillow Top


Cover Material: Skin-friendly fabric


Number of Layers: 9


Fill Material: High density foam and individual pocketed springs


Weight Limit: 1000 Pounds


Special Feature: Breathable, Pressure Relief, Individual Pocketed Coil System


Color: Black, Dark Gray


Product Dimensions: 79.92 x 75.98 x 12 inches


Item Weight: 72.8 pounds


Manufacturer: AWT Store


Date First Available: July 19, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Dec 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.

  • Klarna Financing
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  • Affirm Financing
  • Afterpay Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Easy to unpack and super comfortable!!
Style: 14 Inch Size: Queen
Buy a mattress online is not an easy pick but this one was absolutely perfect! Right in the middle as indicated . Not too firm not too soft . Great quality, super easy to unpack , no smell and I no need to “wait” to use. Overall, great money for value . Not sure for how long it will last but so far so good . ... show more
Reviewed in the United States on October 18, 2024 by Amazon Customer

  • nice mattress
Style: 12 Inch Size: Queen
mice mattress for our guest bedroom. packed well and puffed up to normal size pretty quickly. comfy enough
Reviewed in the United States on December 7, 2024 by DG

  • Soft but firm
Had a mattress for YEARS and it had to be replaced. Thought we would try this since the reviews were good and I really didn’t want to spend 1k on a king mattress. Opened the mattress on my bed frame and let it sit for 2 days, I couldn’t wait 72 hours. At first I thought it was too soft. Than I realized it was because I was use to my old, spring in my back 500lb old mattress. By day 3 of sleeping on it my body thanked me! My body was messed up from my old mattress. This mattress is soft yet firm, cradles the body and if my husband moves….. he’s 6ft 4 big guy….. I can’t feel the mattress shift around to my side like my old mattress. You can feel the individual cushion support and I can really see this mattress lasting about 7-8 years if not a little longer. Highly recommend to someone that doesn’t want to go to a mattress store or spend a lot of money on something that will be replaced in the future, great sleep and great price. ... show more
Reviewed in the United States on March 7, 2024 by ChrisR

  • Comfortable
Style: 12 Inch Size: Queen
Very comfortable
Reviewed in the United States on October 30, 2024 by Cheap

  • Simart Queen Mattress -12 inch "Hybrid"
Style: 12 Inch Size: Queen
This mattress looked good online with all of the features I thought it would be great. Well . . . . . It appears that there is only regular foam and very little, I can feel the "springs", and it squeaks like a regular spring mattress and is definitely not medium firm just soft with very little support that include the mattress edges, I sat on the side and rolled off, so I tried all sides and still rolled off!!! The mattress shifted and I grabbed the mattress from the underside to try pushing it up from the foot of the bed and my fingers dug into what felt like thin cardboard that shifted in my hands. The black fabric is thin and similar to interfacing. ... show more
Reviewed in the United States on October 21, 2024 by Shoppertunist!

  • Wonderful, Great Mattress
Style: 14 Inch Size: Queen
Bed was easy, somewhat heavy so if you are taking it up stairs, make sure you have help. Easy to open and takes not long at all for it to fully inflate. Would definitely recommend.
Reviewed in the United States on November 3, 2024 by cameron willingham

  • I love it
Style: 12 Inch Medium Size: King
Very comfortable! I already bought a few for an Airbnb and I received a lot of good reviews on the quality of the mattresses.
Reviewed in the United States on November 20, 2024 by Gab

  • Very comfortable
Style: 12 Inch Size: Queen
It is absolutely comfortable. Super simple to set up. No complaints.
Reviewed in the United States on November 10, 2024 by Bradley Cassoday

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