12 Inch Full Size Memory Foam Mattress, Cooling Memory Foam Mattress in a Box, Full Size Mattress for Pressure Relief and Cool Sleep, Medium Plush, CertiPUR-US Certified Foam
Condition: New
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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.
To initiate a return, please visit our Returns Center.
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Availability:
In Stock.
Arrives
Tuesday, May 5
Size: Full
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.
- Full Mattress in a Box: No Assembly, No Heavy Lifting. The full 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: Full
Product Dimensions: 75"L x 54"W x 12"Th
Item Firmness Description: Medium Plush
Top Style: Tight Top
Cover Material: TENCEL Blend
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: 75 x 54 x 12 inches
Item Weight: 53.9 pounds
Manufacturer: NAPSIE
Item model number: MNP120F00MDT
Date First Available: October 21, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, May 5
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: 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
Size: Full
Style: 10 inch
Pattern Name: Medium Plush
I had a Zinus mattress that I had purchased previous to this Napsie one and it had felt like I was sleeping on a piece of plywood. Enter the Napsie...there really was only room for improvement but I had a bit of mattress PTSD. When it arrived, I lugged the large box upstairs to my bed frame. It was relatively easy for me to unpack by myself and came with included instructions that were clear and simple. It began to decompress once I removed the vacuum seal plastic and a couple of hours later, it was up close to 10". I didn't sleep on it the first night because I like to give new mattresses 24 hours to settle in. My dog decided she'd sleep on it the first night and she LOVED it. The next night, I was ready. I was looking forward to it all day. Listen. This thing is truly lovely. It provides good support as well as cushion. I did put a 2" memory foam pad on it so it was extra plush. My previous mattress wasn't good, even with extra padding. This thing is a dream. It is good quality. The cover that it comes with is nice and soft but quality. I also was happy that it didn't have an odor that some other brands do. It inflated to it's described size and I would happily purchase again!
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Reviewed in the United States on January 7, 2026 by Victoria
Size: Full
Style: 12 inch
Pattern Name: Medium Plush
I am absolutely thrilled with my new 12-inch Full mattress! As someone who sleeps hot but needs pressure relief for my shoulders and hips, this mattress is a dream come true. The combination of the TENCEL cover and the cooling gel-infused memory foam actually works—I no longer wake up feeling overheated. The 'medium plush' feel is perfectly described; it's firm enough to support my back without any sinkhole feeling, yet soft enough to relax and cradle my body. The 12-inch profile gives it a substantial, quality feel. The fact that it arrived in a box, handled easily, and expanded quickly was just the icing on the cake. Highly recommend for anyone seeking a cool, comfortable, and supportive sleep experience!
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Reviewed in the United States on November 24, 2025 by Ryan Ryan
I got this to fit a trundle bed! And I hadn't even thought about the height of the mattress being an issue to the daybed, but this was EXACTLY the size I needed! (For anyone who bought a Novogratz metal daybed with trundle, get this mattress! ) My kids actually fight over who gets to sleep on this mattress, they're both hot sleepers and the mattress does seem to be cool. I always thought that was a sales gimmick, but it's true! Opening the box and setting it up was ridiculously easy. It went right to the accurate size in less than an hour!! I do want to mention, I am a 2 kid mom and after those pregnancies I have had a lot of back pain. I feel like my entire body just goes back into place without a chiropractor after sleeping on this. I hope that helps someone!
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Reviewed in the United States on October 13, 2025 by Kate
Size: King (U.S. Standard)
Style: 14 inch
Pattern Name: Firm
The media could not be loaded. I am extremely satisfied with this mattress. From start to finish, the experience exceeded my expectations. The mattress arrived well packaged, and the installation was quick and effortless—it expanded fully within 20 minutes. One of the biggest positives was the complete absence of any chemical or “new mattress” odor. The firmness level is exactly as described: supportive without feeling hard. The mattress feels sturdy and well-constructed, with no sagging or motion transfer, even with two people sharing the bed.
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Reviewed in the United States on January 7, 2026 by charis charis
Size: Queen (U.S. Standard)
Style: 14 inch
Pattern Name: Firm
I’m really happy with the NAPSIE 14 inch Queen Mattress. The comfort and pressure relief are excellent the memory foam contours nicely and takes a lot of strain off my back and shoulders. It also offers great support, keeping everything aligned throughout the night. The motion isolation is impressive as well. If someone moves on the other side of the bed, you barely feel it, which makes for a much more peaceful night’s sleep. The overall quality is great, especially for the price. It’s a great value, and setup was quick and easy just unbox, let it expand, and it’s ready to use. Overall, this is a comfortable, supportive, and well-made mattress that delivers high quality without the high price tag. Highly recommend!
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Reviewed in the United States on December 7, 2025 by Steve T