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Dyonery

King 12 Inch Memory Foam Mattress in a Box, Cooling Knit Fabric Cover, Made in USA, CertiPUR-US Certified, Ventilated Copper AeroFusion Memory Foam, Fiberglass Free Mattress, 76”x80”

    • Based on 325 reviews
Condition: New
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$439.99 Why this price?

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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: In Stock.
Fulfilled by Dyonery
Arrives Dec 30 – Jan 4
Order within 20 hours and 59 minutes
Available payment plans shown during checkout

Size: King


Style: 12inch Medium-Cooling


Features

  • Cooling Knit Fabric Cover:Cooling Knit Fabric Cover can create a cooling sensation keeping you comfortable while you sleep.The fabric is smooth and comfortable, absorbent,and allows sweat to evaporate easily, keeping your skin dry.This allows you and your family to enjoy a comfortable.This fabric stays cool-to-the-touch due to its superior breathability and temperature regulating properties that move heat away from the body.
  • 3-layer memory foam mattress:Copper memory foam mattress can help you get a good nights sleep by cradling your body in comfort, reducing tossing and turning,and minimizing common sleep disruptions that can result from uncomfortable pressure points or inadequate support.Whether youre a light sleeper or a restless toss-and-turner, a high-quality three-layer memory foam mattress can help you achieve a more restful and rejuvenating sleep experience.
  • CertiPUR-US & Oeko-Tex Standard 100 Certified: Our mattresses are certified by both CertiPUR-US and Oeko-Tex Standard 100, ensuring that they are free from harmful substances. The memory foam and fabrics have been independently evaluated to comply with all mandatory and voluntary safety standards for mattress products.
  • Easy Setup:Our mattresses are easy to setup. They can fit all types of frames, including box springs, floors, adjustable beds, foundations, slatted platforms, and flat platforms. Simply wait for 12 hours for the mattress to fully expand to its original shape.
  • 10-Year Limited Warranty for Worry-Free Sleep: We are dedicated to providing you with the best night's sleep possible through our superior products. If there are any issues with your mattress, please contact our customer support team and they will assist you in resolving the problem. Please note that our mattresses cannot be returned once opened.

Brand: Dyonery


Size: King


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


Top Style: Tight Top


Cover Material: Most likely a high-quality synthetic material like Polyester or Nylon, or possibly Cotton, but the exact material is not explicitly stated in the provided information. See more


Number of Layers: 3


Fill Material: Copper Memory Foam


Special Feature: Copper infused


Color: Black


Model Name: DYO-MCG120K0002T


Product Dimensions: 80 x 76 x 12 inches


Item Weight: 84 pounds


Manufacturer: Dyonery


Item model number: DYO-MCG120K0002T


Date First Available: November 22, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Dec 30 – Jan 4

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 Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Couldn’t be happier
Size: King Style: 14inch Firm
I was kinda reluctant on buying a mattress out of a box, but I really had no choice. We had paid $3000 for a mattress that killed my husband and I every night. We would wake up hurting everywhere. I felt bad for my husband because his hips and back hurt so bad. I saw this mattress and I always wanted a firm foam mattress. This mattress is fantastic I couldn’t be happier. It is firm but my husband and I wake up almost pain free. He said his hips doesn’t even hurt in the morning. I have neuropathy so I’m always hurting everywhere that could hurt. I use to wake up with bad shoulder pain sleeping in our old mattress but not once in 5 days sleeping on this have I yelled out in pain. The edge of the mattress is firm you will not slide off or roll off. It comes with a 10 year warranty if it last for 5 years I will be happy and I will buy it again for the price. You cannot go wrong if you are in the market for a firm mattress. I have this mattress on top of my old box spring and it doesn’t slide off. You will also not feel your partner moving around. My old mattress my husband tossed and turned and I felt like I was on a boat. This mattress is excellent take my word for it. ... show more
Reviewed in the United States on November 3, 2024 by Tommie Basnight
    • Very Satisfied
Size: Queen Style: 14inch Firm
I love everything about this mattress. First I lay down to try it out and fell fast asleep. It is super comfortable, firm and does not sag when I sit. Height is as described. Would highly recommend. I am actually purchasing another one for my grand-daughter.
Reviewed in the United States on November 24, 2024 by Ebbie
    • OoooOOooOoo!!
Size: Twin XL Style: 12inch Medium-Cooling
As the subject line reads: OoOooooOoo! Super pleased with how quickly these shipped and WOW are they amazing for the price. The cooling feels amazing (so long as you have the proper sheets on them) and the mattress is indeed firm, but with a nice medium top layer that lets you "settle" into place before being supported. I purchased 2 of these (Twin XL) for an adjustable bed set and they work great! HOWEVER, if you like a zero gravity position you might have to adjust it a little as the mattress (while still NEW) did not want to relax completely at the bottom. ALSO - note: Due to the "copper" trim that runs around the edge of the mattress, a complication arises when being used side-by-side with another mattress you end up with a slight cap at the top (maybe about as wide as a thumb) due to the trim and the top being curved not squared. So far, it has not been an issue for sleeping and cuddling. There are anti-slip beads on the bottom side of the mattress. Other activities require shifting a little away from the crack. Our cat dislikes it but she is fickle anyway. 110% would purchase again. ... show more
Reviewed in the United States on October 12, 2024 by Sean
    • Awsome mattress!!!
Size: Queen Style: 12inch Medium
This is a great mattress , I gave it 72 hours before I slept on it to fully inflate. I am a bigger guy with a horrible back and this mattress is VERY comfortable...
Reviewed in the United States on November 23, 2024 by Mark S Rieck
    • Un-Orthopedic - Hard as a rock
Size: King Style: 14inch Firm
Please be warned, this product is hard as a rock, it has made all my back, hips and wrist problems even worst. The manufacture doesn’t allow any returns if is not for a clear defect, meaning this is a product that you can’t try like many other mattress brands in the internet. Save some money, time and frustration avoiding buying this product and from this brand. I am stuck with a product that is hurting my body, has to spent $300+ in a good topper and wasted almost one week dealing with their poor customer service. To the manufacturer: it is ridiculous that you are an online mattress brand and you don’t offer any trial periods. Also, they way you play with words in your term and conditions can even be considered for a case of false advertising. ... show more
Reviewed in the United States on November 19, 2024 by Paula
    • Can't even describe how perfect this is for me! It's a cool gel top as well!
Size: Queen Style: 12inch Medium-Cooling
Review Image by Lexi Mitchell Lexi Mitchell
Review Image by Lexi Mitchell Lexi Mitchell
Review Image by Lexi Mitchell Lexi Mitchell
My son put this together very easily and hassle free (and he gets frustrated pretty easy!) and it fits perfectly in my room. It's very sturdy, the frame, and the mattress is PERFECT - it's hard/firm and has the cool top fabric and since I'm in my late 50s I sleep pretty warm. Best purchase ever and it came very quickly! ... show more
Reviewed in the United States on November 9, 2024 by Lexi Mitchell Lexi Mitchell
    • Firm and comfortable and decent price
Size: King Style: 14inch Firm
This fabric does what it says! You feel the cooling right away when you lie down, which is great if you get hot at night like me. It's soft, soaks up sweat well, and keeps my skin dry all night. I love how it controls the temperature, keeping me cool and comfy, even on warm nights.
Reviewed in the United States on September 29, 2024 by ML
    • Unreal for price
Size: King Style: 14inch Medium
Absolutely love how the bed feels. Good quality and value for money. The performance is there! I'm only giving 4 stars because the bed is not as perfect and square as the picture. Tbh it still looks good and had some baggyness on half of the top but that definitely did not affect the feeling and performance. ... show more
Reviewed in the United States on August 24, 2024 by Kevin

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