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Dyonery

Dyonery King Size Mattress, 12 Inch Gel Memory Foam, Cooling & Back Pain Relief, Fiberglass Free, CertiPUR-US Certified, Foam Made in USA, Medium

  • Based on 73 reviews
Condition: New
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Availability: 20 left in stock
Fulfilled by SZLY SC
Arrives Aug 3 – Aug 4
Order within 8 hours and 12 minutes
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Size: King (U.S. Standard)


Style: 12 Inch


Pattern Name: Medium


Features

  • Superior Cooling & Refreshing Sleep Environment: Experience truly cool, comfortable sleep with the Dyonery gel-infused charcoal memory foam that effectively regulates temperature, dissipates body heat up to 3x faster than standard foam,alleviates pressure points, and helps relieve back pain-Keeping you refreshingly cool and sweat-free all night long.
  • Perfect Medium Feel Support:Designed with a balanced medium-firm feel (6-7/10 on the firmness scale), the Dyonery mattress contours precisely to your body's shape and weight. This medium mattress provides proper spinal alignment, offers balanced comfort and support suitable for all sleeping positions, and delivers a cozy yet supportive rest without being too soft or too firm.
  • Certified Safe & Non-Toxic Materials:Foam Made in the USA with CertiPUR-US and Oeko-Tex Standard 100 certifications, ensuring that they are free from harmful substances and independently tested for safety.
  • Quick & Easy Setup: Compatible with all bed frames including box springs, adjustable beds, floors, and hospital beds, simply unroll and allow 12 hours for full expansion to its original shape for immediate comfort.
  • 10-Year Limited Warranty & Return Policy: Enjoy peace of mind with our 10-year limited warranty. PLEASE NOTE, non-quality related returns after opening are not accepted.

Brand: Dyonery


Size: King (U.S. Standard)


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


Item Weight: 80.9 Pounds


Item Firmness Description: Medium


Top Style: Tight Top


Cover Material: Jacquard


Fill Material: Bamboo Charcoal Gel Memory foam


Special Feature: Breathable, Durable, Low Motion Transfer, Pressure Relief, Temperature Regulating


Color: Grey


Item Firmness Description: Medium


Additional Features: Breathable, Durable, Low Motion Transfer, Pressure Relief, Temperature Regulating


Construction Type: Memory Foam


Size: King (U.S. Standard)


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


Item Weight: 80.9 Pounds


Item Thickness: 12 Inches


Item Dimensions: 80 x 76 x 12 inches


Cover Material: Jacquard


Fill Material: Bamboo Charcoal Gel Memory foam


Mattress Comfort Layer Material: Gel Memory Foam


Material Type: Gel Foam, Memory Foam


top-style: Tight Top


Color: Grey


Style Name: 12 Inch


Brand Name: Dyonery


Model Name: MDV120K00CHT


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


Model Number: MDV120K00CHT


UPC: 199581211216


Mattress Type: Standard Mattress


Manufacturer: Dyonery


Manufacturer Part Number: MDV120K00CHT


Included Components: Mattress


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Aug 3 – Aug 4

Yes, absolutely! You may return this product for a full refund within 90 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.

Similar Products

Top Amazon Reviews

    • Exactly What I Was Looking For Exactly What I Was Looking For
Size: Queen (U.S. Standard) Style: 10 Inch Pattern Name: Medium
Review Image by Rut Ramos
⭐⭐⭐⭐⭐ This mattress was exactly what I was hoping for. It feels comfortable and supportive at the same time, with just the right amount of softness. The memory foam contours nicely without feeling too firm or too squishy. I also like that it stays comfortable throughout the night and doesn’t trap too much heat. Overall, it feels like a quality mattress and was a great upgrade from my old one. ... show more
Reviewed in the United States on June 17, 2026 Reviewed in the United States on June 17, 2026 by Rut Ramos
    • Very comfortable and good quality!
Size: King (U.S. Standard) Style: 14 Inch Pattern Name: Medium
Happy I purchased this mattress. It keeps me cool, is so comfortable as it really contours your body. It was very easy to set up.
Reviewed in the United States on June 20, 2026 by Jezabellruss
    • Very comfortable, as described.
Size: Queen (U.S. Standard) Style: 10 Inch Pattern Name: Medium
Great mattress, totally sealed just unpacked, wait and use. Quality item, smooth texture.
Reviewed in the United States on June 10, 2026 by Clara R.
    • Just right! Just right!
Size: Queen (U.S. Standard) Style: 10 Inch Pattern Name: Medium
Review Image by Tiffany
So cozy! We don’t even have a frame for it yet, but it’s doing the trick, we love it! It’s just soft enough to still be a little firm! Easy to set up too!
Reviewed in the United States on June 23, 2026 Reviewed in the United States on June 23, 2026 by Tiffany
    • Great product, a bang for buck
Size: Queen (U.S. Standard) Style: 10 Inch Pattern Name: Medium
Extremely easy set up, definitely a great price for what it is, just the right amount of firmness for memory foam. And overall really good fit for me
Reviewed in the United States on June 4, 2026 by Maya Sutherland
    • Perfect mat
Size: Twin XL Style: 10 Inch Pattern Name: Medium
Absolutely love this mattress!!! Bought it for a daybed we got to use when we have extra guest , and it is super comfy for sitting or laying on. Definitely recommend!
Reviewed in the United States on June 2, 2026 by stefanie kinnison
    • great matress
Size: Twin XL Style: 14 Inch Pattern Name: Medium
first night sleeping and my back feels great. and I get back aches on the last matress.. Very good matress
Reviewed in the United States on June 25, 2026 by Ann Brown
    • Memory foam mattress
Size: Queen (U.S. Standard) Style: 14 Inch Pattern Name: Medium
I let it set for two days or 48 hours and it doesn’t seem to form very well to the body like they advertise it. I’m gonna give it a chance for another week or so if it doesn’t do what it’s supposed to do I will. I will have to return it.
Reviewed in the United States on June 16, 2026 by It worked fine the first couple of times, but then after that, the teeth start getting dull, the coffee grounds are larger. It doesn’t grind as well as it did not worth the money.

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