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- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
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Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
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30-day returns
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30-day refund/replacement
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Oct 30 – Oct 31
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At a glance
- Condition
- New
- Size
- Queen
- Style
- 12 in
- Pattern
- Medium
- Model
- NA 12"-12Q Medium
- Dimensions
- 80 x 60 x 12 in
- Weight
- 63 lb
- In the box
- Memory Foam Mattress
Features 5
- Breathable, Soft-Fit Fabric for Secure Sleep: The outer fabric features a skin-friendly texture with great airflow to keep you cool even in warm climates; a touch of spandex ensures a snug, wrinkle-free fit, while the inner cover acts as a safe, effective flame-retardant barrier with no fiberglass, no harsh chemicals.
- Balanced Comfort & Medium Support That Stays Cool: The top layer Gel Memory Foam adapts to your body contours and weight while resisting temperature changes. Beneath it, a responsive CoolFlex Foam layer adds gentle pushback for balanced, medium support. The gel infusion further enhances cooling.
- Support That Remains Strong Over Time: The BraceSleeper high-density base forms a durable foundation that preserves shape and spinal alignment over time. Whether you sleep solo or share the bed, you'll notice reduced sagging, stronger edge support, and more consistent, long-lasting stability night after night.
- Certified Safe & Non-Toxic Materials: Made in the USA, the foam is backed by both CertiPURUS and OekoTex Standard 100 certifications. Independently tested to be free from harmful substances, it delivers a cleaner, healthier sleep environment for your home without any hidden toxins or safety concerns.
- Quick Setup & 10-Year Limited Warranty: Dyonery mattress arrives compressed in a box for convenient home delivery. Simply unbox, unroll, and allow 2472 hours to fully expand to its intended shape. It comes with a 10year limited warranty, but PLEASE NOTE: once opened, the mattress is not eligible for return.
Description
Does this mattress have cooling technology? Absolutely. We add cooling gel into the memory foam to reduce heat accumulation on the mattress surface. The highly breathable cover further optimizes air flow, effectively preventing stuffiness and keeping you cool the whole night. What's the firmness level? This mattress is rated Medium. It delivers a perfect balance of comfort and support, relieves body pressure, keeps your body aligned, and suits all sleeping positions all night long. Does this mattress have safety certifications? The foam is CertiPUR-US certified, and all mattress materials meet Oeko-Tex Standard 100. Strictly tested to exclude harmful substances, it is healthy, safe and suitable for everyone. How long does it take for the mattress to fully expand? It mostly expands within 24–48 hours, and may take up to 72 hours to reach the full height. You can sleep on it safely after 24 hours while it continues expanding. Is there long-term quality coverage? Dyonery Mattress has 10-year quality coverage against manufacturing defects. It works well for years and gives you complete reassurance.
Specs 30
| Brand | Dyonery |
|---|---|
| Size | Queen |
| Product Dimensions | 80"L x 60"W x 12"Th |
| Item Weight | 63 pounds |
| Item Firmness Description | Medium |
| Top Style | Tight Top |
| Number of Layers | 3 |
| Fill Material | Gel Memory Foam, High Density Foam |
| Special Feature | Breathable, Durable, Pressure Relief, Removable Cover, Temperature Regulating |
| Color | White |
| Additional Features | Breathable, Durable, Pressure Relief, Removable Cover, Temperature Regulating |
| Construction Type | Memory Foam |
| Item Dimensions L x W x Thickness | 80"L x 60"W x 12"Th |
| Item Thickness | 12 inches |
| Item Depth | 12 inches |
| Item Dimensions | 80 x 60 x 12 inches |
| Mattress Comfort Layer Material | Gel Memory Foam |
| Material Type | Gel Foam |
| Style Name | 12 Inch |
| Brand Name | Dyonery |
| Model Name | NA 12"-12Q Medium |
| Product Benefits | Back Pain Relief, Pressure Relief, Reduces Toss & Turn |
| Model Number | NA 12"-12Q Medium |
| UPC | 199581224773 |
| Number of Items | 3 |
| Mattress Type | Standard Mattress |
| Number of Packs | 1 |
| Manufacturer | Dyonery |
| Unit Count | 1 Count |
| Manufacturer Part Number | NA 12"-12Q Medium |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Oct 30 – Oct 31
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Learn more about financing & leasing here.
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Top Amazon Reviews
Comfortable and Supportive
Size: Queen
Style: 12 Inch
Pattern Name: Medium
I’ve been really happy with this mattress! It was easy to set up, expanded quickly after unboxing, and had very little odor. The gel memory foam provides a great balance of comfort and support, helping relieve pressure while still feeling supportive. I’ve been sleeping much better and wake up feeling well-rested. It’s an excellent value for the price and I would definitely recommend it to anyone looking for a comfortable memory foam mattress.
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Reviewed in the United States on August 5, 2026 by Stephanie
Great King Mattress, Great Value!
Size: King
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Ordered the Dyonery 12-inch King Mattress and it arrived even earlier than expected! It was rolled up tightly and expanded to its full shape as soon as I opened the plastic, with no strong odor. At 12 inches thick, it strikes a great balance between soft comfort and support. Unbeatable quality for the price!
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Reviewed in the United States on August 16, 2026 by Annabelle
Would definitely buy again!
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Absolutely love it! It fits perfect, waterproof, soft and comfortable doesn’t sound like plastic when you sit on it. Would buy again, in fact I have the California king size too!!
Reviewed in the United States on August 19, 2026 by Gracie
Not bad!
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Inflated to 1 inch below the advertised size, but still comfortable and soft. I definitely sink into this mattress more than I expected, but it’s still nice. Only been sleeping on it for a week or 2 but it’s better than my previous 7 year old memory foam mattress and I don’t want to spend a lot of money. Fiberglass free was important to me and this fits that bill. I have an inkling that this mattress may form a dent over time if I sleep in the same spot every night because of the way I wake up slightly sunken in. The foam re-inflates after I get up, but still. Less rebound than I expected for a brand new mattress. Overall, very comfortable. Worth the cheap price. Also was delivered a few days early and inflated and way ready to sleep on in less than a day
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Reviewed in the United States on August 10, 2026 by Amazon Customer
Very Comfortable and Worth the Price
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I am happy with this mattress. It expanded quickly after unboxing. The medium firmness feels just right, not too soft or too firm, and the gel memory foam keeps it comfortable throughout the night. I slept better and woke up without the usual back and shoulder aches. Great value for the price!
Reviewed in the United States on July 22, 2026 by Amazon Customer
Uncomfortable and hard for me to fall asleep
Size: Full
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The mattress is so hard in my opinion. I tried to give it a chance but it’s been a little over a week and it hurts my lower back to sleep on. Very uncomfortable and it’s hard for me to fall asleep. I need to get a mattress topper for this which kinda sucks bc it’s already super tall and my sheets won’t fit over the mattress very well.
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Reviewed in the United States on August 5, 2026 by Olivia
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Love my new mattress soft, med */hard. Happy with the purchase. No odor and it fits perfect in my RV
Reviewed in the United States on July 22, 2026 by Mary Rudy
Better Than Expected
Better than expected fits perfectly in our Cougar Half Ton Travel Trailer. My wife was skeptical of the fit and quality before i ordered it but even she who is very hard to please agrees, It is very comfortable and amazing how such a big mattress expands from such a small package, Definitely recommend it to anyone looking to upgrade from the thin uncomfortable standard RV King size mattresses typically found in travel trailers.
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Reviewed in the United States on July 22, 2026 by Bob