King Mattress, 12 inch King Size Cool Memory Foam Mattresses for Pressure Relief, Medium Firm Hybrid Mattress in a Box, CertiPUR-US Certified
Condition: New
Buy Now, Pay Later
As low as
$33.33
/ mo
Learn more
- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
90-day returns
Learn more
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.
View our full returns policy here.
Availability:
Only 10 left in stock, order soon!
Arrives
Monday, May 18
Recently Viewed
![Bidtakay Large Fabric Baskets with Handles [3-Pack] Collapsible Storage Basket for Shelves 15 X 11 X 9.5 inches Canvas Bins for Closet Organization (White&Beige)](https://m.media-amazon.com/images/I/714v1FnABoL._AC_US500_.jpg)
Style: 12 inch
Size: King
Features
- Pressure Relief Memory Foam MattressExperience cloud-like comfort with our premium memory foam that adapts to your body's contours. This mattress evenly distributes pressure, reducing muscle tension and joint stress for truly restful sleep. Wake up refreshednot sore!
- Comfortable Hybrid Mattress KingGet the best of both worlds with our hybrid design: individually wrapped coils for bounce & support + plush memory foam for pressure relief. Perfect for cminimizes motion transfer.
- Cool Memory Foam MattressNo more night sweats! Our gel-infused memory foam actively dissipates heat while you sleep. The open-cell structure enhances airflow, keeping you cool and comfortable all night long.
- Certified Safe MaterialsSleep soundly knowing your mattress is certifiedfree from harmful chemicals like formaldehyde and heavy metals. The certified cover adds an extra layer of safety for healthier sleep.
- Mattress in a BoxEasy setup! Ships compressed in a compact boxjust unroll, let it expand (fully ready in 2448 hours), and enjoy. No heavy lifting or complicated assemblyideal for apartments and tight spaces!
Brand: Sofelf
Size: King
Product Dimensions: 79.92"L x 75.98"W x 12"Th
Item Weight: 77 Pounds
Item Firmness Description: Medium Firm
Top Style: Gel Top
Number of Layers: 2
Fill Material: Gel Memory Foam
Color: White
Coil Type: Pocketed Coil
Product Dimensions: 79.92 x 75.98 x 12 inches
Item Weight: 77 pounds
Manufacturer: Sofelf
Item model number: KZF-W001-K12
Date First Available: September 18, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, May 18
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.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Style: 14 inch
Size: Queen
This mattress has been one of the best investments for my sleep. The medium firmness is perfect—it provides great support for my back while still being soft enough to relieve pressure on my shoulders and hips. From the very first night, I noticed a huge difference: I wake up without aches and with so much more energy. The cooling memory foam keeps the temperature comfortable throughout the night, so I never overheat. I also love that it’s CertiPUR-US certified, which gives me peace of mind knowing it’s made with safe, high-quality materials. I highly recommend it to anyone looking for deep, restorative sleep and long-lasting comfort. Absolutely worth every penny!
...
show more
Reviewed in the United States on September 13, 2025 by Leidy arias Leidy arias
Style: 12 inch
Size: Queen
The media could not be loaded. This mattress can't be beat for the price. We had a sleep number bed for 25 years and it wasn't holding air properly any longer. While this probably won't last 25 years and is not adjustable, it's very comfortable. It is more of a traditional feel medium firm mattress with a soft pillow top. Not one you sink into. Set up was pretty easy but was a bit heavy for one person. It took about 24-36 hours to fully expand, but we were able to sleep on in the first night. The springs give it bounce and support and the topper gives it some softness. We added an fluffy mattress pad topper for more softness. It's pretty motionless too! Amazing it came in a box, as now it looks like something you'd buy from a mattress store! Recommended if you are looking for a cheaper alternative with support, but do not want to sink in like a memory foam mattress.
...
show more
Reviewed in the United States on December 30, 2025 by Michele Michele
Style: 14 inch
Size: Queen
This mattress is a great choice for anyone looking for comfort and support! It arrived quickly, was super easy to set up, and expanded to full size in just a few hours. The firmness feels perfect and comfortable yet supportive for however you sleep. I love the cooling gel foam, which helps keep me cool at night. After using it for a few days, I’ve noticed fewer aches and better sleep quality. For the price, it feels just as good as some of the more expensive options. Overall, I’m really happy with it!
...
show more
Reviewed in the United States on August 31, 2025 by kelly vu kelly vu
Style: 14 inch
Size: Queen
Overall this is a good mattress - it’s comfortable and functional. However I wouldn’t really call this a pillow top mattress nor is it motionless. I’ve been sleeping on this mattress for a week now and while I do like it and sleep well- I wish I had bought the full on memory foam mattress. I’d call this a glorified spring mattress. It is a medium- not too soft nor too hard. Sleep quality is good. But I’ve had a full on memory foam mattress in the past and loved it- my only complaint was that It slept hot - but decided to try this mattress as I did have pitting with my last one after six years. This mattress does not sleep hot which is nice and does seem like it will hold up for a while.
...
show more
Reviewed in the United States on August 2, 2025 by Jenny Bee
Style: 14 inch
Size: Queen
The mattress came packaged well and was easy to move into the room. Setup was simple—just unbox, unroll, and it expanded to full size within a few hours. The build feels sturdy and the top has a nice plush comfort, but the hybrid design keeps it supportive underneath. After a few nights of use, it feels medium firm as described, which works well for both back and side sleeping. It’s comfortable and comparable in feel to some of the pricier hybrid mattresses I’ve tried in showrooms, but at a much more reasonable cost. So far, I’ve been sleeping comfortably and waking up without aches. Overall, a great value if you’re looking for a reliable hybrid mattress without spending a fortune.
...
show more
Reviewed in the United States on August 20, 2025 by Omer Rauf
Style: 12 inch
Size: Full
I’m very happy with the level of comfort and support it provides. The material feels high-quality and adapts well to the body, helping reduce pressure on the back and hips. I’ve noticed a big improvement in my sleep quality . I wake up feeling more rested and without soreness. It also does a great job with motion isolation, which is perfect if you share the bed. Overall, it’s a great value for the price and I would definitely recommend it.
...
show more
Reviewed in the United States on October 18, 2025 by Verónica
Style: 12 inch
Size: Queen
This by far has been the best mattress we've bought in a long time. We read all of the reviews and shopped around before deciding to try this out...so glad we decided on this one. True queen size and the thickness is spot on. Released it from packaging just as instructed and conformed to the promised size. Then we slept on it and WOW. Absolutely comfortable! Perfect firmness! This is the best price for a mattress we found all over the internet. I did not take very good pictures but we feel this was an amazing deal!
...
show more
Reviewed in the United States on November 27, 2025 by Rachel Temple-Harris Rachel Temple-Harris
I have herniated disc's & nerve damage. I also do a lot of physical activity. Wasn't able to sleep right for months, staying up til 4am every night. After I purchased this bed. I was actually able to fall asleep. This has helped improve my sleep and manage my pain when lying sleeping. Price point is appreciated as well. Definitely recommend!
...
show more
Reviewed in the United States on November 15, 2025 by Anonymous