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Ruoysun

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 63 reviews
Condition: New
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$389.99 Why this price?
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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, May 1
Order within 7 hours and 10 minutes
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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, May 1

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

    • Great Bed, Great Value!!!
Style: 12 inch Size: Full
This bed is awesome! Just the right amount of firmness. I did keep my old box spring and put the mattress on top of it So I have a taller bed. It was nice to have it delivered to the house. Its heavy but we got it upstairs and opened. Let it "Expand" for 3 days and it was perfect.
Reviewed in the United States on April 15, 2025 by Julie Lord
    • Buy it!
Style: 14 inch Size: King
We bought this mattress after reading the reviews. We have spent $$$$ on mattress in the past with high expectations and no better sleep quality. This new mattress is totally worth it, and for the price, it’s a bargain
Reviewed in the United States on March 23, 2025 by kirk ferris
    • So comfortable
Style: 14 inch Size: King
Most comfortable bed I’ve ever bought
Reviewed in the United States on March 19, 2025 by Amazon Customer
    • Great bed for price, would buy again
Style: 14 inch Size: King
Honestly a great bed for the price. I legitimately had upper back pain and wasn't sure what was causing it. Fixed my diet and stretched more and ordered a new bed (this one) and now my back feels better. It isn't very firm however and lacks edge support even though they listed "strong edge support" as a designing feature. Id buy again ... show more
Reviewed in the United States on April 12, 2025 by Loveleen
    • Good quality and good price.
This is Ruoysun Full Size Mattress, Medium Firm Full Bed Mattress in a Box, Hybrid Construction Individual Pocket Springs with Gel Memory Foam, Pressure & Back Pain Relief, CertiPUR-US. This is a full size mattress that come in a box. The mattress is of good quality. I unboxed and took off the plastic. The instructions say it can take 72 to expand. It was 80% inflated in an hour and 100% the next day. The memory foam on top is good. It is a little on the softer side. This says "Medium-Firm" and that is about right. I think I like a firmer mattress, but that is just my preference. The mattress is just a described. The quality of the build is good. I like the hybrid construction with the coils on the bottom. The mattress comes with a mattress cover as well which is nice. It even comes pre-installed on the mattress. I have slept on this for several nights now and I do like it. I switched from a coil mattress. The memory foam mattress sleeps "hot". The mattress traps more heat next to your body than a traditional mattress. This can be good or bad depending on your preference. Overall, this is a really good quality mattress at a good price! ... show more
Reviewed in the United States on April 9, 2025 by JessicaAmber777
    • Nice mattress for average weight people.
For starters, I'm 330lbs and 6ft 4, and this is a bit *too* soft for me. But that's expected as people over 250lbs tend to perceive mattresses as softer since they depress more under our added weight. That said, I'd put it on the softer end of medium, where someone who is of average weight would probably put it at the higher end, and someone super skinny would think it's firm. Hope that helps! For me, I need firm, but for an average person, this will be exactly what it says it is and I think the feel of it is wonderful. Just not for long term use if you're REALLY big like me. Oh, and it only took a few hours to expand, and there were no weird smells once it did. I have an air quality monitor too that measures VOCs and they only went up 2 parts per million, which for a ton of brand new foam, is quite excellent, and still well within safe healthy ranges. ... show more
Reviewed in the United States on April 20, 2025 by Glass
    • Amazing Amazing OMG Amazing!
This bed is perfect! It's is springy without being too soft. It feels amazing to sleep on. The height is perfect (I placed it on top of the box springs I already owned). It perfectly fits standard full size mattress covers and sheets. It's so very comfortable and the quality is amazing! It's been about 3 weeks and I'm still having about it. I'll definitely update my review in a few months but the quality is so worth the price! ... show more
Reviewed in the United States on April 21, 2025 by Elle L.
    • High quality mattress
Style: 10 inch Size: Full
This is my first mattress that has not been a twin and I am really happy with it. It is very comfortable and provides a good night's sleep. All of the sheets I have purchased for it have fit well. I feel very supported by this mattress and would say it is a medium firmness. It keeps it shape when you sit on the edge so that is appreciated. The fabric on this mattress is very soft and it is really comfortable without the sheets! The mattress was very easy to set up. I think this is very high quality mattress that will last me for years. ... show more
Reviewed in the United States on April 21, 2025 by In IN

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