12 Inch Queen Mattress, Cooling Memory Foam Mattress in a Box, Queen Size Mattress for Pressure Relief and Cool Sleep, Medium Plush, CertiPUR-US Certified
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90-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.
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Availability:
In Stock.
Arrives
Wednesday, May 6
Size: Queen (U.S. Standard)
Style: 12 inch
Pattern Name: Medium Plush
Features
- Napsie TriCool Matrix: Our TriCool Tech combines a breathable TENCEL cover, cooling gel foam, and charcoal-infused egg crate foam. This advanced matrix actively wicks heat, regulates temperature, and increases airflow for all-night comfort, ideal for aching backs and hot sleepers.
- More Breathability: TENCEL fibers move moisture better than common fabrics, while the egg crate structure creates dedicated 3D airflow channels that actively circulate airworking together to prevent heat buildup and sweat accumulation for scientifically cooler sleep.
- Enhanced Pressure-Relief: The contoured surface of egg crate foam cradles high-pressure areas like shoulders and hips more effectively than flat foam, paired with the spinal alignment maintained by the BraceSleeper Support Foam, reducing pressure points for sore backs.
- Eco-conscious and Certified Safe: This mattress features TENCEL fibers and natural bamboo characoal, known for their Plant-based properties. CertiPUR-US Certified foam provids a Child-Safe & Chemical-Free sleeping environment especially for the health-conscious sleepers.
- Queen Mattress in a Box: No Assembly, No Heavy Lifting. The queen size mattress is rolled, compressed and delivered straight to your door in a compact box for shipping. It is also compatible with most bed bases and frames.
Brand: NAPSIE
Size: Queen (U.S. Standard)
Product Dimensions: 80"L x 60"W x 12"Th
Item Firmness Description: Medium Plush
Top Style: Tight Top
Cover Material: Lyocell
Number of Layers: 4.0
Fill Material: Gel Memory Foam, High Density Foam, Memory Foam
Special Feature: Breathable, Fire Retardant, Low Motion Transfer, Pressure Relief, Temperature Regulating
Color: White & Grey
Product Dimensions: 80 x 60 x 12 inches
Item Weight: 62.9 pounds
Manufacturer: NAPSIE
Item model number: MNP120Q00MDT
Date First Available: October 21, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, May 6
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: Full
Style: 12 inch
Pattern Name: Medium Plush
I am honestly blown away by the NAPSIE 12-inch Memory Foam Mattress. From the moment I opened the box, I could tell this was going to be a high-quality mattress. It expanded quickly, had zero chemical smell, and felt incredibly plush right away. Sleeping on it has been a dream—literally. The memory foam contours perfectly to my body without feeling too soft, and I wake up with no pressure-point pain. The cooling feature is real too; I don’t overheat at night anymore, which has always been a problem for me with other foam mattresses. The medium-plush feel is the perfect balance of comfort and support. I fall asleep faster and stay asleep longer. It’s honestly such a noticeable upgrade from my previous mattress. The fact that it’s CertiPUR-US certified just adds even more peace of mind. For the quality, comfort, and price, this mattress is absolutely worth it. I’d recommend it to anyone looking for a supportive and cool night’s sleep.
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Reviewed in the United States on December 9, 2025 by Kate Kate
Size: Queen (U.S. Standard)
Style: 14 inch
Pattern Name: Medium Plush
I’ve been using the NAPSIE 14 Inch Queen Memory Foam Mattress for a while now, and it has exceeded my expectations in every way. Right out of the box, it expanded quickly and had very little odor, which was a big plus. The medium plush feel is just perfect—not too firm and not too soft. It provides great support for my back, and I’ve noticed a real improvement in back and pressure-point pain since switching to this mattress. It contours nicely to the body while still keeping the spine aligned. One of my favorite features is the cooling Tencel cover. I tend to sleep warm, and this mattress truly helps regulate temperature. I wake up feeling comfortable, not overheated or sweaty. The fact that it’s CertiPUR-US certified and made with foam manufactured in the USA gives me peace of mind about quality and safety. For a mattress-in-a-box, the overall build feels very high-end and durable. ✔️ Great back support ✔️ Cool and breathable cover ✔️ Medium plush comfort ✔️ Easy setup ✔️ Excellent value for the price If you’re looking for a comfortable, cooling mattress that supports your back and delivers premium quality without the premium price, this one is a fantastic choice. I would absolutely buy it again and highly recommend it to anyone in need of better sleep.
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Reviewed in the United States on January 14, 2026 by Liliana Liliana
Size: Full
Style: 12 inch
Pattern Name: Medium Plush
We bought this full-size memory foam mattress for my kid and it’s been great so far. It was easy to set up and fully expanded pretty fast. It’s comfortable but still supportive, not too soft, not too firm. My kid sleeps really well on it and doesn’t wake up complaining about being uncomfortable. No strong smell either, which I appreciated. For the price, the quality is better than expected and it feels sturdy and well made. Overall, really happy with this purchase.
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Reviewed in the United States on January 21, 2026 by Ellee Hall
Size: King (U.S. Standard)
Style: 14 inch
Pattern Name: Firm
This 14-inch firm king memory foam mattress is a game changer for my back pain. The firmness is just right—supportive without feeling hard—and it keeps my spine properly aligned all night. The cooling Tencel cover really works; I tend to sleep hot, but this mattress stays noticeably cooler and more breathable than others I’ve tried. It expanded quickly out of the box with no strong odor, which I appreciated, and the quality feels premium knowing the foam is CertiPUR-US certified and made in the USA. Overall, this mattress offers excellent comfort, support, and cooling, and I wake up feeling rested and pain-free.
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Reviewed in the United States on January 31, 2026 by Good quality Good quality
Size: Full
Style: 12 inch
Pattern Name: Medium Plush
This mattress is incredibly comfortable and supportive. It's just the right balance between soft and firm, making it perfect for a good night's sleep. I wake up feeling well-rested with no back pain. Great quality and totally worth the price. Highly recommend it!
Reviewed in the United States on February 1, 2026 by SY
Size: King (U.S. Standard)
Style: 14 inch
Pattern Name: Firm
I absolutely love my Napsie mattress. From the very first night, I could tell the quality was excellent it feels supportive, well made, and super comfortable. Setup was easy, although I’ll admit I was a little concerned at first because it didn’t fully rise right away after unboxing. After a few hours, though, it expanded completely and reached its full height, so no issues there. I usually prefer a firm mattress, which is why I chose this one, and overall I’m very happy with the support. It provides great spinal alignment and feels sturdy without being cheap or stiff. That said, I do have slight regrets. I think this one might be just a bit too firm for my personal comfort. In hindsight, I probably should have gone with the medium firm option for a little extra pressure relief and softness. Still, the mattress is fantastic, and the quality, comfort, and support easily earn it high marks. If you love a very firm sleeping surface, this mattress is a great choice. For those who want a balance of comfort and support, I’d recommend considering the medium firm instead. The plus side is I won’t sink into it while giving back shots to my man
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Reviewed in the United States on January 31, 2026 by Amazon Customer Amazon Customer
Size: Queen (U.S. Standard)
Style: 12 inch
Pattern Name: Medium Plush
The media could not be loaded. I’ve been very pleased with this 12-inch queen mattress. The cooling memory foam does exactly what it promises, giving a noticeably cooler night’s sleep compared to standard foam mattresses. The TENCEL cover feels soft and breathable, and the gel-infused layers help prevent heat buildup. In terms of comfort, the mattress hits a great balance. It’s firm enough to provide solid support, especially around the lower back and hips, but still soft enough on top to feel relaxing and comfortable when settling in. Pressure relief has been excellent, and I’ve felt less stiffness in the mornings. The mattress arrived well-packed and was easy to unbox. It expanded quickly without any strong odors, which was a nice surprise. The CertiPUR-US certification also adds confidence in the materials and overall safety. Overall, this mattress offers great value: supportive, cool, and comfortable, with the convenience of a mattress-in-a-box delivery. I would definitely recommend it to anyone looking for a medium-plush memory foam option.
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Reviewed in the United States on November 24, 2025 by Michael Michael