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Ruoysun

12 Inch California King Mattress, Cooling & Breathable Hybrid Cal King Mattress in a Box, Upgraded Support Medium Firm Mattresses with Gel Memory Foam & Pocket Springs, CertiPUR-US Certified

    • Based on 51 reviews
Condition: New
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$549.99 Why this price?

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Availability: 20 left in stock
Fulfilled by Amazon
Arrives Monday, Apr 28
Order within 2 hours and 27 minutes
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Style: 12 Inch Medium


Size: California King


Features

  • 4 Major Peaceful Sleep Point:Gel Memory Foam: long sleep without heat, Independent Pocket Springs: No noise in sleeping, Motion Isolation:Reducing motion disturbances in companion's sleep, Upgraded Edge Support: Avoid severe sagging and falling off the edge of the bed
  • 12 Inch Cal King Size Mattress in a Box: Vacuum compressed packaging, easy to transport, door-to-door delivery. Easy to install: Unbox--Unroll,Carefully scratch the compressed air package, please keep a certain distance while waiting for the expansion, 48-72 hours after the full expansion can be restored to the best state
  • Sleep with Confidence: Hybrid mattress Queen uses breathable and cooling skin-friendly fabrics, Fireproof Foam, CertiPUR-US Certified Foam. For your better experience, we offer 100 nights sleep trial, 10 years support, please feel free to purchase
  • Medium Firm California King Mattress: Hybrid Mattress is made of independent pocket springs and high-density memory foam that meets the needs of people in various sleeping positions,. It provides corresponding support according to the gravity of body parts in different sleeping positions, and adjusts to your sleep movements at any time
  • Reliable Customer Support: Whether you have pre-purchase questions or post-purchase concerns, feel free to ask us a question with our 24/7 customer service support team

Brand: Ruoysun


Size: California King


Product Dimensions: 84"L x 72"W x 12"Th


Top Style: Euro Top


Cover Material: Breathable 3D Knitted Fabric


Fill Material: Gel Memory Foam


Weight Limit: 800 Pounds


Special Feature: Cooling, Breathable, Pressure Relief, Low Motion Transfer, Fiberglass Free, Orthopedic


Color: Black


Coil Type: Pocketed Coil


Product Dimensions: 84 x 72 x 12 inches


Item Weight: 93.8 pounds


Manufacturer: Ruoysun


Item model number: Cal King Mattress 12 Inch


Date First Available: April 8, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Apr 28

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.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great purchase for the price.
Style: 14 Inch Size: King
I purchased the King size. This mattress is amazing. Especially for the price. I’ve slept on it for 2 nights so far. I haven’t woken up stiff and sore like I usually do. It’s firm but soft at the same time. Purchase and shipping was completely hassle free. I couldn’t be more pleased.
Reviewed in the United States on April 23, 2025 by Cathy
    • Get the Mattress!
Style: 14 Inch Size: King
Very very comfortable. To me, it does live up to its description of medium firm. The mattress it replaced was a firm mattress. This one allows my back to stay aligned rather than sink into the bed .. which causes me pain when I wake up… I’m really happy about the quality for the price.
Reviewed in the United States on April 21, 2025 by Chrissi
    • Balance Comfort and Support
Style: 12 Inch Size: Full
After too many nights on a mattress that felt like a medieval torture device, I took the plunge on this 12-inch hybrid. Between the gel memory foam and pocket springs, it hits that sweet spot—firm enough to keep my back from staging a protest, but soft enough that I don't feel like I'm sleeping on a plank. Unboxing was a trip—came compressed in a box, and watching it expand was like witnessing a magic trick. Took about 48 hours to fully puff up, but the wait was worth it. Now, after a long day of wrangling hair at the salon, chasing my 6-year-old, and dodging the three cats underfoot, collapsing onto this mattress feels like a reward. It's breathable, so no overheating, and the motion isolation means I don't get jostled every time my husband decides to reenact a gymnastics routine in his sleep. If you're in the market for a mattress that balances comfort, support, and the chaos of family life, this one's a solid bet. ... show more
Reviewed in the United States on March 29, 2025 by I Candy
    • Bed
Style: 14 Inch Size: Queen
I love it and very comfortable
Reviewed in the United States on April 20, 2025 by Anthony R.
    • So nice
Style: 12 Inch Size: Full
So far, so good and can't beat the price.
Reviewed in the United States on April 10, 2025 by Ashley Lynn
    • Great kids mattress
Style: 12 Inch Size: Full
We been able to place this in at the cabin. The full is the perfect size for a kids room. The mattress was packed air tight in plastic and then shipped in a box. We received it undamaged and in perfect condition. Upon opening, we had to be very careful not to cut the mattress as it was an extremely tight fit getting the scissors in-between the plastic and the mattress. After opening we let it sit for 24 hours. Being a hybrid, it did seem as long to take shape or get rid of smell as a normal memory foam mattress. After it took shape, it didn't look near as nice as the pictures on the listing, but fit on our full size bed frame well. The bed is very comfortable. Maybe a touch stiffer than the average memory foam. It does feel like a quality piece that will last a good while. It's sleeps decently cool and is MUCH better than the spring-based mattress we had. Very little movement when a person shifts around. The mattress isn't disturbed my movement. This is great if you have a couple kids sleep in it at the same time. Overall, it a wonderful sleeper and a good fit. Not quite as nice as the pictures, but very functional and comfortable. 5 stars. ... show more
Reviewed in the United States on April 16, 2025 by RFar
    • Full Size Mattress
Style: 12 Inch Size: Full
I ordered this 12-inch Full Size Mattress for my daughter's bed, and it has proven to be an exceptional addition. This hybrid mattress combines advanced gel memory foam and individually wrapped pocket springs, striking a perfect balance between comfort and support. With a medium-firm feel, it provides the ideal level of firmness for my daughter, who tends to prefer a mattress that supports her body without feeling too rigid. One of the standout features of this mattress is its cooling and breathable design. The gel-infused memory foam is specifically engineered to help regulate body temperature, which is crucial for my daughter, as she frequently experiences hot flashes. I've noticed that the mattress effectively dissipates heat, maintaining a consistently comfortable temperature throughout the night. Additionally, the breathable layers allow for optimal airflow, ensuring that she stays cool and comfortable as she sleeps. In terms of comfort, the mattress has really excelled. It offers remarkable pressure relief, which has made a noticeable difference for her, especially since she often suffers from back aches and discomfort during sleep. The combination of memory foam and pocket springs offers targeted support for her spine while contouring to her body's natural shape. So far, the mattress has held up exceptionally well, showing no signs of sagging or discomfort after several weeks of use. I am genuinely pleased with this purchase, and I believe the thickness of 12 inches is just right for my daughter, providing both softness and support without being overly plush. Overall, I couldn't be happier with this mattress—it has transformed her sleep experience for the better. ... show more
Reviewed in the United States on March 26, 2025 by Christina
    • nbeatable Comfort and Support!
Style: 12 Inch Size: Full
The Ruoysun 12 inch Full Size Mattress has truly transformed my sleep experience. As someone who values both comfort and support, this mattress exceeds all expectations. The combination of gel memory foam and pocket springs provides the perfect balance of plushness and firmness. I've noticed a significant reduction in pressure points, and I wake up feeling refreshed and pain-free. The cooling technology is also a game-changer, keeping me comfortable throughout the night. Set-up was a breeze, and the quality of materials is evident. For anyone seeking a top-tier mattress at an affordable price, the Ruoysun is an excellent choice. ... show more
Reviewed in the United States on April 21, 2025 by Samantha Shepard

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