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KauRelax

King Size Mattress,12 Inch Hybrid King Mattress in a Box,Medium Firm,Gel Memory Foam and Pocket Springs,Pressure Relief,100-Night Trial,CertiPUR-US Certified

  • Based on 229 reviews
Condition: Used - Like New
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$269.10 Why this price?
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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Saturday, Aug 1
Order within 18 hours and 48 minutes
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Style: 12 Inch Firm


Size: King


Features

  • DUAL SUPPORT DESIGN:The KauRelax 12 inch king size hybrid mattress combines gel memory foam, pressure-relief comfort foam, and zoned pocket coils with varying firmness to dynamically support your sleep posture and keep your spine aligned.
  • TARGETED SUPPORT WHERE IT MATTERS MOST:Reinforced springs in the lumbar zone, paired with low-resistance foam, effectively support the lower back and prevent sinking in the hips. The king size hybrid mattress helps reduce back pain and relieves pressure, ensuring restful sleep.
  • BREATHABLE, MOISTURE-WICKING TOP: The mattress features a high-quality top layer that delivers exceptional comfort and breathability, efficiently wicking away moisture and heat to keep your body cool and dry all night. Breathable foam and individually wrapped springs further enhance airflow, preventing heat buildup for a refreshing and comfortable sleep experience.
  • King Mattress In A Box:The Mattress King measures 76"W x 80"D x 12"H and supports a maximum weight of 1500 lbs;The Mattress is compatible with most King Beds, The Mattresses are losslessly compressed into the box, which makes it easy to transport
  • Worry-Free & Guaranteed:Say goodbye to sleep anxieties with the KauRelax mattress. Our foam meets CertiPUR-US standards, and comes with 30-night trial and 10-year support for safety and durability. If you have any unsatisfactory issues, please feel free to contact us.

Brand: KauRelax


Size: King


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


Item Weight: 80 Pounds


Item Firmness Description: Medium


Top Style: Euro Top


Cover Material: Polyester Blend


Number of Layers: 3


Fill Material: hybrid


Weight Limit: 1500 Pounds


Item Firmness Description: Medium


Number of Layers: 3


Weight Capacity Maximum: 1500 Pounds


Additional Features: Breathable, Low Motion Transfer, Pressure Relief


Mattress Coil Type: Pocketed Coil


Construction Type: Hybrid


Is Customizable?: No


Portable: No


Size: King


Item Dimensions L x W x Thickness: 80"L x 76"W x 12"Th


Item Weight: 80 Pounds


Item Depth: 200.66 centimeters


Item Dimensions: 80 x 76 x 12 inches


top-style: Euro Top


Color: Cloud White


Style Name: 12 Inch Firm


Brand Name: KauRelax


Age Range Description: Adult


Model Name: 12" KING SIZE FIRM MATTRESS


Product Benefits: Back Pain Relief, Pressure Relief


Model Number: QY-Mattress


Manufacturer: KauRelax


Included Components: Hybrid Mattress


Cover Material: Polyester Blend


Fill Material: hybrid


Product Care Instructions: Hand Wash Only


Mattress Comfort Layer Material: Comfort Foam, Memory foam


Material Type: Foam, Memory Foam


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Aug 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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  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Best sleep for the price!
Style: 12 Inch Firm Size: King
The media could not be loaded. I couldn’t be happier with this mattress. From the very first night, I noticed a huge difference in comfort and support. It strikes the perfect balance between soft and firm — supportive enough to keep my back aligned, but plush enough to feel cozy and pressure-relieving. I tend to wake up during the night, but since switching to this mattress, I’ve been sleeping more deeply and waking up feeling genuinely rested. I’ve also noticed a big improvement in my back and shoulder comfort. No more stiffness in the mornings! The setup was incredibly easy. It expanded quickly and didn’t have any strong odor. The materials feel high quality, and you can tell it’s well made. Even when my partner moves, I barely feel it, which has been a game changer. For the price, this mattress is an amazing value. It honestly feels like something you’d find in a high-end hotel. If you’re on the fence, don’t hesitate — this was absolutely worth it. Highly recommend! ... show more
Reviewed in the United States on February 17, 2026 by mitchel
    • Great for the price
Style: 12 Inch Firm Size: King
Nice for the price, laying on it right now very comfy. Recommend putting it ON the frame then cutting the vacuum sealed plastic. Expanded perfectly!
Reviewed in the United States on February 24, 2026 by Kelsey Thomas
    • overall good bed
It’s good for the price it’s just not the comfiest bed ever but it’s good for the price.
Reviewed in the United States on August 15, 2025 by Kaylee
    • As comfortable as advertised. Fast delivery and
We purchased this mattress for our guest room. It is working fine. We have had some compliments that it is very comfortable.
Reviewed in the United States on January 12, 2026 by Dave B
    • This is not medium firm. This is a water bed.
Style: 12 Inch Firm Size: King
This bed is horrible and Im so upset. Its supposed to be medium firm and its not. Its super soft and I feel like im sinking. My edges did not inflate properly and you can even sit on the ends because I sink to the bottom and feel like im going to slide off. It feels like a water bed. I truly believe they sent me the wrong one. ... show more
Reviewed in the United States on March 7, 2026 by Liya
    • Would recommend!
Style: 12 Inch Firm Size: King
Actually love this mattress, the quality is great and the price was the best I found around! The hybrid is great because it has some give from the springs but feels like memory foam top. Easy to assemble and after leaving it for 48 hours to expand it looked like I bought it in person.
Reviewed in the United States on November 18, 2025 by Raven Parman
    • De muy buena calidad, tal y como lo quería 100%
Style: 12 Inch Firm Size: King
Review Image by Ramon morell
De muy buena calidad, tal y como lo quería 100%
Reviewed in the United States on February 24, 2026 by Ramon morell
    • It does not expand to 12 inches
It’s very comfortable but the corners are only 9 inches and in the middle it’s only 10 inches. The mattress is much thinner than described.
Reviewed in the United States on October 15, 2025 by Yudelka DePena

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