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Dyonery

Dyonery Queen Size Mattress 12 Inch Cooling Copper Gel Memory Foam, Firm

  • Based on 360 reviews
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Availability: In Stock.
Fulfilled by SZLY SC
Arrives Oct 31 – Nov 1
Order within 13 hours and 42 minutes
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Color: Gold Firm


Size: Queen (U.S. Standard)


Set name: 12 Inch


Features

  • Breathable Cooling Cover & Fiberglass-Free Design:Experience ultimate comfort with our premium cooling knit fabric, engineered to enhance airflow and dissipate body heat. Featuring a fiberglass-free inner sleeve, this multi-layer mattress ensures a safe and refreshing sleep environment, keeping you cool and comfortable throughout the night.
  • Superior Firm Support for Healthy Alignment:Designed for those who prefer a structured feel, this firm memory foam mattress provides a stable and resilient surface. The high-density foam layers offer targeted support for your shoulders, waist, and hips, promoting optimal spinal alignment. It is the perfect choice for back, side, and stomach sleepers seeking pressure relief without the "sinking" feeling.
  • Advanced Copper Gel-Infused Memory Foam: Stay fresh with our copper gel-infused layer. This advanced foam helps regulate temperature by drawing heat away from the body while managing moisture and odors. The responsive cushioning adapts to your movements, ensuring a cleaner and cooler sleep surface for years to come.
  • Certified Safe & Non-Toxic Materials:Foam Made in USA with CertiPUR-US and Oeko-Tex Standard 100 certifications, ensuring that they are free from harmful substances and independently tested for safety, ensuring a healthier sleep environment for your home.
  • Quick Setup & 10-Year Limited Warranty:This queen mattress in a box compatible with all bed frames including box springs, adjustable beds, and platforms, simply unroll and allow 24-72 hours for full expansion to its original profile. Enjoy peace of mind with our 10-year limited warranty for lasting comfort. PLEASE NOTE: non-quality related returns after opening are not accepted.

Description

Dyonery creates premium mattresses designed for deep rest, optimal body alignment, and cool comfort. Share moments, share comfort. Gel-infused charcoal memory foam dissipates heat faster, relieves back pain, and keeps your sleep space fresh and odor-free. Gel memory foam and CoolFlex layers adapt to your body while resisting heat. Enjoy balanced medium support and fiberglass-free safety. Copper gel foam draws heat away, manages odors, and offers targeted pressure relief for your shoulders, waist, and hips. Customize your comfort for reading, TV, or sleep. Enjoy effortless position adjustments designed for ultimate relaxation At Dyonery, we craft restful living experiences. Combining premium memory foam technology with modern aesthetic design, we aim to wrap every home in exceptional comfort Yes. All Dyonery mattresses are crafted with CertiPUR-US and Oeko-Tex Standard 100 certified foams Dyonery mattresses arrive compressed in a convenient box. Simply unbox, unroll, and allow 24–72 hours for full expansion. They are compatible with all bed frames, including adjustable bases and box springs.

Brand: Dyonery


Size: Queen (U.S. Standard)


Product Dimensions: 80"L x 60"W x 12"Th


Item Weight: 70 pounds


Item Firmness Description: Firm


Top Style: Tight Top


Number of Layers: 5


Fill Material: Gel Memory Foam, High Density Foam, Memory Foam


Special Feature: Durable, Fire Retardant, Pressure Relief, Removable Cover, Temperature Regulating


Color: Gold Firm


Item Firmness Description: Firm


Number of Layers: 5


Additional Features: Durable, Fire Retardant, Pressure Relief, Removable Cover, Temperature Regulating


Construction Type: Gel Foam


Size: Queen (U.S. Standard)


Item Dimensions L x W x Thickness: 80"L x 60"W x 12"Th


Item Weight: 70 pounds


Item Thickness: 12 inches


Item Depth: 12 inches


Item Dimensions: 80 x 60 x 12 inches


Fill Material: Gel Memory Foam, High Density Foam, Memory Foam


Mattress Comfort Layer Material: Gel Memory Foam


Material Type: Gel Foam, Memory Foam


top-style: Tight Top


Color: Gold Firm


Style Name: 12 Inch


Item Highlight: Back Pain Relief, Fiberglass Free, Balanced Softness & Pressure Point Support, Foam Made in USA


Brand Name: Dyonery


Model Name: DY 12"-12Q-Firm


Product Benefits: Back Pain Relief, Pressure Relief


Model Number: DY 12"-12Q-Firm


UPC: 199581189072


Number of Items: 1


Mattress Type: Standard Mattress


Number of Packs: 1


Manufacturer: HEALTHCARE SC LLC


Unit Count: 1 Count


Included Components: mattress


Manufacturer Part Number: DY 12"-12Q-Firm


Set Name: 12 Inch


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Oct 31 – Nov 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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Top Amazon Reviews

    • Comfortable and Supportive
Review Image by teemo
The option I chose was queen size, 14-inch firm. Honestly, I doubted this mattress at first because it is memory foam and the price was much cheaper than well-known brands. I wasn’t sure if it would be worth it, but I wanted to try. When it arrived, it was packed in a box, and I really wondered if it could actually become a 14-inch queen mattress. I left it overnight in the living room, and it expanded into a full-size mattress just like it should. The firmness is intact even though it is memory foam. I usually have some ache in my waist and back, so firmness is important. I have been using it for four nights, and I haven’t felt any discomfort. I’ve been able to sleep through the night without interruptions, which was better than I expected. The height is also as expected, and I could make a very high bed with it. One thing I was glad about is that there was no factory smell. Many products or clothes that come tightly packed have a vinegar-like smell, but this mattress did not. Because of that, I was able to start using it right away without worrying about washing or airing out the cover. The cover itself has a nice color and design, but I don’t want to damage it, so I’m using a mattress cover and sheets on top. ... show more
Reviewed in the United States on September 29, 2025 by teemo
    • Best bed ever !
It’s been over a year since I’ve had this bed and it still holds it shape and is still as firm as day one and it’s super cooling I still love this
Reviewed in the United States on August 14, 2026 by Kamrynn
    • Firm and cool meet mattress.
Color: Gold Firm Size: King (U.S. Standard) Set name: 12 Inch
Very firm but soft enough mattress. 6'1 275lbs feels great. The cooling technology is so good it feels like you laying on something wet it just that cool to a hot body love it. Highly recommend if a person that's a hot body like firmness and a little softness this is the mattress for you. Get it before they are all gone. ... show more
Reviewed in the United States on August 2, 2026 by KIRK L JONES
    • Liked it so much, I bought 2!
I recently had back surgery and needed a firm mattress! I couldn’t be more pleased. As a matter of fact, my favorite thing to do is crawl onto it after a busy day! Extremely comfortable for myself.
Reviewed in the United States on September 3, 2026 by Diane James
    • Good rest, I have had back fusion surgery
Color: Gold Firm Size: Queen (U.S. Standard) Set name: 12 Inch
Nice and firm as promised, easy installation. I’ve been having the bed nights
Reviewed in the United States on July 25, 2026 by Diego
    • light weight
Color: Gold Firm Size: Full Set name: 12 Inch
WONDERFUL! arrived just in time. I sleep SOOO good now.
Reviewed in the United States on September 16, 2026 by M. H. Anderson
    • No more back pain
Color: Gold Firm Size: Twin XL Set name: 14 Inch
I no longer have back pain! I was worried with my last mattress experience, and didn’t want to spend what the name brand mattress stores request. But, this has changed my mornings!
Reviewed in the United States on July 21, 2026 by Amazon Customer
    • Perfect for neck & back pain- super firm and hard; unfortunate odor
Color: Gold Firm Size: Full Set name: 12 Inch
I love rock hard mattresses; I need them for my back and neck pain. This one is ROCK ROCK Hard; which is crazy awesome. The only downside is that no matter what the smell won’t go away- at first I thought it was just a factory smell and wasn’t too bothered by it due to my assumption that it would fade over time and with the proper care; but unfortunately almost 30 days later after letting it sit and “air out” in a well ventilated area; ensuring it was dry at all times; using baking soda and enzyme cleaner with high powered fans; nothing will get rid of the smell!!! Not sure if they are all like this or I just got a damaged one that someone spilled something on before it got wrapped up and shipped; but aside from the smell it’s ROCK HARD and that’s AWESOME! ... show more
Reviewed in the United States on September 9, 2026 by Amy Brown

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