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Ruoysun Luxury California King Mattress 12 Inch, Medium Firm Hybrid Mattress Cal King in a Box, 7-Zones& Extra Edge Support, Cooling Gel Memory Foam& Pocket Spring, Motion Isolation, Pressure Relief

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Availability: 20 left in stock
Fulfilled by Amazon

Arrives Monday, May 18
Order within 22 hours and 11 minutes
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Style: 12 Inch


Size: cal_king


Features

  • Luxury Comfort California King Mattress: Skin-friendly breathable 3D knitted fabric offers a cloud-like touch, It is completely free from fiberglass and any harsh chemical odors, ensuring a soft and cozy embrace throughout the night. It gently contours to your body, relieving pressure points and enhancing comfort, making every sleep a luxurious experience
  • Breathable Medium Firm Cali King Size Mattress: Cooling Hybrid Gel Memory Foam and Pocketed Springs with innovative cooling gel-infused foam technology actively regulates body temperature. It effectively dissipates heat, preventing overheating and maintaining an optimal sleeping climate, allowing you to enjoy a cool and refreshing sleep
  • Pressure Relief and Stable Construction: A multi-layered, multi-functional foam and hundreds of independent springs work together to create an ergonomic sleep system. Precision-engineered support system is designed to maintain natural spinal alignment. It provides targeted support to different body zones, reducing back pain and promoting healthy posture, waking you up feeling rejuvenated
  • Quiet and Low Motion Transfer Systems: Built with a noise-free structure, the mattress ensures undisturbed sleep. The pocketed springs system minimizes motion transfer, allowing you and your partner to move freely without disturbing each other, for a peaceful slumber
  • California King Mattress In a Box: Comes in a compact box for easy transportation and home delivery. The installation process is simple - just open the box, unfold it, carefully slice through the vacuum packaging, and then stay away to wait for expansion, preferably give it 48-72 hours for full expansion, after which it will provide you with superior sleeping comfort. Suitable for standard bed frame types including platforms, adjustable, slat bases and box spring
  • Tips and Reliable Customer Support:12 inch Cal King mattress measuring 84L x 72W x 12Th with a maximum weight capacity of 770 lbs, for a more comfortable sleeping experience, this cal king size mattress is recommended for kids, teens, adults, couples, families or use in guest rooms.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: cal_king


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


Item Firmness Description: Medium Firm


Top Style: Euro Top


Cover Material: Cloud-Like 3D Knitted Frabic


Number of Layers: 8


Fill Material: Gel Memory Foam


Weight Limit: 770 Pounds


Special Feature: Breathable, Low Motion Transfer


Item Firmness Description: Medium Firm


Number of Layers: 8


Weight Capacity Maximum: 770 Pounds


Additional Features: Breathable, Low Motion Transfer


Mattress Coil Type: Pocketed Coil


Construction Type: Hybrid


Is Customizable?: No


Size: cal_king


Item Dimensions L x W x Thickness: 84"L x 72"W x 12"Th


Item Thickness: 12 Inches


Item Dimensions: 84 x 72 x 12 inches


Item Depth: 12 inches


top-style: Euro Top


Color: Black


Style Name: 12 Inch


Brand Name: Ruoysun


Model Name: Hybrid Mattress RA12CK26AMF


Product Benefits: Back Pain Relief, Improves Sleep, Posture Support


Model Number: RA12CK26AMF


Manufacturer: Ruoysun


Unit Count: 1.0 Count


Age Range Description: Adults Kids


Cover Material: Cloud-Like 3D Knitted Frabic


Fill Material: Gel Memory Foam


Mattress Comfort Layer Material: Gel Memory Foam


Material Type: Gel Foam


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 18

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


  • Love it
Style: 12 Inch Size: cal_king
Extremely comfortable, I am satisfied with my purchase to the point that I got another one in a different size for my son’s room
Reviewed in the United States on May 6, 2026 by thelma cerda

  • Better for my back so far
Style: 14 Inch Firm Size: Queen
This was bought as a gift. It is helpful with my back at times. You have to get used to a hybrid. I feel the foam hybrid is better for me than a regular mattress. The price is very reasonable. You have to let it fill up before using it. The ridges around the bed was softer than the middle. For the price it’s worth giving it a chance. ... show more
Reviewed in the United States on April 27, 2026 by Goat milk lover

  • the best sleep i’ve had in a while
Style: 14 Inch Firm Size: Queen
This mattress was a winner! I have lumbar ridiculopathy and I need extra support because I am a side sleeper ,so is my husband . We both “were” snorers but this bed provides the comfort and support we needed and has eliminated nighttime disturbance and at an awesome price. I would highly recommend purchasing ... show more
Reviewed in the United States on April 4, 2026 by susann sanders

  • This mattress is amazing
This mattress is amazing. The only downside is, it's very hard to get out of bed now. It actually supports my weight. It's not too firm for my wife. And my biggest plus about this mattress, is it has been helping with my back issues coming from a full foam mattress. The hybrid foam mattresses are far superior ... show more
Reviewed in the United States on June 5, 2025 by adolfo cardenas

  • Very firm
Mattress is pretty firm. I love it. Heavy for 1 person to move around.
Reviewed in the United States on June 6, 2025 by Kindle Customer

  • Very nice mattress
This Ruoysun mattress is lovely. I was surprised at the size of the box and had doubts about how well it would hold up to being rolled up so small. However, after following the instructions (unroll on the bed frame you want to use and then leave for a couple of days) it really did regain its shape and size without any issues. It's a comfy mattress with a euro top and springs. I'm using it on our guest bed and it really does seem it will last many years. I think it would work well for a teenager, a guest room mattress, that sort of thing. ... show more
Reviewed in the United States on April 3, 2025 by Jay Bird

  • Excelente
Excelente súper como superó todas mis expectativas
Reviewed in the United States on May 4, 2025 by LisandraP

  • good simple mattress, doesn't feel cheap!
This mattress reminds me of a base level Se@ly or Sert@ brand one. It's supportive with some cushion on top, and seems to be made pretty well. It is compressed so will expand after you open it. Plan to wait at least 24 hours before sleeping on it or putting on bedding, as it will off-gas and smell weird. ... show more
Reviewed in the United States on September 24, 2025 by Alice Pepper

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