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King Size Mattress, 12 Inch Firm Hybrid King Bed Mattress in a Box, with Gel Memory Foam and Individual Pocket Springs, Motion Isolation, Strong Edge Support & Pressure Relief

  • Based on 44 reviews
Condition: New
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$459.99 Why this price?

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Availability: 20 left in stock
Fulfilled by Amazon

Arrives Thursday, Jun 26
Order within 11 hours and 55 minutes
Available payment plans shown during checkout

Style: 12 inch


Size: King


Features

  • Enjoy A Comfortable Deep Sleep: The king mattress combines multiple layers of premium memory foam with individual support spring to provide superior comfort and targeted support. Make sure your weight is evenly distributed from head to toe, fully relaxes your muscles, which helps relieve back pain and improves your sleeping quality
  • Breathable and Healthy: The mattress king size features a breathable knit fabric top which can promotes airflow, discharge the steam and sweat from the contact surface between you and the mattress, keeping you dry and comfortable throughout the night
  • Quiet and Independent Spring: The 12 inch king size mattress is built-in high-quality independent pocket coil and slow rebound sponge, which can effectively absorb the noise and vibration caused by turning over during sleep, minimize motion transfer, so you are not disturbed by your partner turning over
  • Suitable for All Sleep Positions: The mattress king with 4 layers all-foam system, suitable for all sleeping positions. This firm mattress is made of gel memory foam, which aligns your spine and evenly disperses your body weight to relieve pressure points while you sleep
  • Strong Edge Support: The reinforced edge support of the king bed mattress can prevent it from sagging and enhance its stability. reduce the risk of rolling off during nighttime movements, thus improving safety. The reinforced edges also protect the internal structure, extending the mattress's service life
  • King Mattress in A Box: The hybrid mattress is vacuum roll packaged and delivered anywhere. The Ruoysun king mattresses come with a 10-year protection and 100 night trial. Please keep a safe distance from the mattress when unpacking to prevent injury by its instant expansion. And allow 48 - 72 hours for it to fully expand

Brand: Ruoysun


Size: King


Product Dimensions: 80"L x 76"W x 12"Th


Top Style: Euro Top


Cover Material: 3D Knitted Fabric


Fill Material: Gel Memory Foam


Weight Limit: 700 Pounds


Special Feature: Low Motion Transfer, Zoned Support, Pressure Relief, Back Pain Relief


Color: Grey


Coil Type: Pocketed Coil


Product Dimensions: 80 x 76 x 12 inches


Item Weight: 93.8 pounds


Manufacturer: Ruoysun


Item model number: 12 inch King Size


Date First Available: February 26, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jun 26

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.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • Excellent value
Style: 10 Inch Medium Firm Size: Queen
Thrilled with the mattress. Easy to unroll, with care. Expands easily. Very comfortable. Would highly recommend. Great value.
Reviewed in the United States on May 29, 2025 by JBA

  • Great deal! Great mattress!
Style: 10 Inch Medium Firm Size: Full
Perfect mattress for my 6 yr old grandson. Great deal! Shipped in a box , unrolled it and off to bed he went. I’ve snuggled with him as well and it’s definitely comfortable and supportive. Would highly recommend!
Reviewed in the United States on May 19, 2025 by Donna

  • Great price
Style: 10 Inch Medium Firm Size: Full
Product as stated. I ordered a queen after receiving this full. These are for extra bedrooms.
Reviewed in the United States on May 25, 2025 by Joyce's

  • Quality mattress
Style: 10 Inch Medium Firm Size: Queen
Firm bed. Would purchase again.
Reviewed in the United States on May 26, 2025 by Drelyn

  • Good mattress. Comfortable and lux feel. Some nits.
Arrived vacuum packed and rolled. The box dense and a bit hard to maneuver for one person (me, a 150 lb decently fit guy). Sort of like trying to drag / move a dead body around like I see on tv all the time. A small dolly is recommended unless you have a willing helper (not a reluctant teenager). Overall, the mattress seems to be a good quality. I thought it was a bit soft on the edges despite mentioned extra edge support. But lay down and it feels pretty nice. About 12 inches tall with a nice top material. There is a definite top so you won't be able to flip it but can rotate it to extend its life. Some side stitching thread was loose so I trimmed that to avoid pulling it out. No smells that I noticed and the first few nights my reluctant teenager was happy with it. This is currently unavailable and no price is listed but when I got it, it was $370. That seems like a good but not great price. ... show more
Reviewed in the United States on May 5, 2025 by TooMuchTime

  • The best of both plush foam and pocketed coil springs!
I ordered this full-size mattress for our youngest daughter who's in grad school and needed a full size mattress for her apartment bedroom. In the past year, I've ordered 3 different mattresses. This one is for our daughter, and two other ones for our spare bedroom. Sometimes I have to sleep in that room because my husband snores. I needed a comfortable supportive, responsive mattress. This is the best of the 3 of them and has everything I require of our mattresses! The first one I ordered was AWFUL! It was a memory foam only mattress. Just lying on it over night killed my back, the edges sagged horribly. It had no edge protection, no responsiveness, it held heat, and was just really uncomfortable. The next one is in our spare bedroom. It's a hybrid that feels almost like a waterbed because it's very bouncy and springy. It's a comfortable mattress that doesn't sag, has edge protection, is fine for adults but is too responsive for children, and doesn't hold heat. This mattress is a full size gel memory foam hybrid mattress. It has everything I want in a mattress and is every bit as good as the over $1,000 mattress we have in our master bedroom. It has great edge protection that doesn't sag. It provides excellent support. It's great for side sleepers, people who sleep on their back, and I found it very comfortable even though I sleep on my stomach and side. I woke up feeling comfortable and well rested. It's responsive but also there's no motion transfer, so one person isn't disturbed if another person gets out of the bed or if one person moves a lot during sleep. Neither of the other two mattresses we ordered have that, and it's a feature that's really a must have if 2 people are sharing a bed. It's the best of both plush foam and pocketed coil springs! This mattress fully plumped up within a few hours. We set it up, went out to get lunch, and picked up some supplies. By the time we returned, it was to it's full height. We were staying in a hotel for a couple of days and our daughter stayed with us. That gave the mattress time to air out even though we didn't notice any smell or odor. We wanted to let it air out anyway. This mattress comes in a box. It arrived vacuum sealed and in a box that one or two people can manage easily. Our daughter and I highly recommend this mattress! ... show more
Reviewed in the United States on April 27, 2025 by J.Adams

  • A very good choice. I am very happy
Style: 10 inch Size: Queen
The media could not be loaded. I had a difficult time buying a mattress online and not laying on it first. I read reviews for a year. What is comfortable to one person, may not be to the next. I crossed my fingers and roll the dice. I got lucky, because I couldn't have picked a better mattress in person. I love it. I weigh about 250lbs and was worried I would be sleeping in a hole. The sides are firm and can handle me sitting on the sides of the bed. I find it soft enough to distribute the pressure evenly, but firm enough that I don't feel like I am trying to roll out of a hole, when I want to roll over. I could stay in this bed for days, if I was sick and not hurt. I bought this mattress for the travel trailer. My wife paid 2k for the bed in the house and there is very little difference. Mattress stores have a lot of overhead. Large prime real-estate showrooms, employees, delivery trucks...etc. They would have to sell this Mattress for over a Thousand dollars to make a profit. I am extremely happy with this purchase. ... show more
Reviewed in the United States on May 31, 2025 by glendon fleming

  • Brings Back the Bouce
In order to fit my mothers wood desk into my master bedroom I need a foot or two of floor space, As I am not entertaining frequently I have no need for a two person bed. A full size is adequate for the cats and I. With this my ordering of the house opens a third room for extended summer grand kid visits with parent. The mattress cover is soft and the foam top may suffice without additional puff top. The springs bring back the bounce that is all gone in foam only mattresses. I recommend a full support frame if not using a box spring, I find the height of the bed an important feature. I suppose a frame that has a bed base as height as a box spring does would work but box spring base helps the pocket springs in the mattress last longer by absorbing a portion of the force. ... show more
Reviewed in the United States on May 13, 2025 by Response from ROB

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