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Twin Mattress in a Box, 8 inch Mattresses for Kids Bed Single Size Daybed Individual Bunk, Memory Foam Medium Firm

  • Based on 3,592 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Sep 22
Order within 12 hours and 6 minutes
Available payment plans shown during checkout

Style: 8 inch


Size: Twin


Features

  • 90% Polyester, 8% Polyamide and 2% Spandex
  • Unparalleled Quality Control - you can rest easy knowing your new mattress was created with high manufacturing standards and environmentally conscious practices. Get a good night's sleep every single night and wake up feeling refreshed and ready for the day.
  • Medium-Firm Feel - medium-firm is supportive for most body types and sleep positions. Too-soft mattresses dont give proper support and can cause back problems in the long run. Too-hard mattresses dont provide pressure point relief. The sweet point is our medium-firm (6-7 out of 10 on the firmness level scale) mattress strikes the right balance between comfort and support and promotes better sleep.
  • Gel Infused - our foam is infused with a cooling gel that helps in dissipating heat, allowing you to sleep cool while retaining memory foams original body-conforming and pressure-relieving features.
  • CertiPUR-US Certified - all foam used in our mattresses are made without ozone depleters and maintain CertiPUR-US Safety Standards of textile articles at all stages of production. It will have minimal off-gassing, or new mattress smell when brought into your home.
  • Fiberglass-Free FR Inner Cover - the rib fabric, 92% Cotton, 8% Polyester, provides a safe, effective flame retardant layer around our mattresses, without the negative aspects of fiberglass and other fire-retardant chemicals. No skin irritation, no breathing problems, and no health risks for you and your family so you can truly rest easy at night.
  • Ready for Instant Enjoyment - compressed into one box that is easily shipped and maneuvered into the bedroom. Simply unbox, unroll and this mattress does the rest, expanding to its original shape within 2 hours.

Brand: MLILY


Size: Twin


Product Dimensions: 75"L x 38"W x 8"Th


Top Style: Tight Top


Cover Material: graphene


Number of Layers: 3


Fill Material: Gel Memory Foam , Cotton


Special Feature: Made in the USA


Color: White


Model Name: VI-7X8I-OJVD


Product Dimensions: 75 x 38 x 8 inches


Item Weight: 27 pounds


Manufacturer: MLILY


Item model number: VI-7X8I-OJVD


Thickness: 8 Inches


Fabric Type: 90% Polyester, 8% Polyamide and 2% Spandex


Refill: Gel Memory Foam , Cotton


Care instructions: Hand Wash Only


Warranty Description: • mlily usa warranty – every mlily mattress purchase is covered under our 10-year limited warranty. We believe that you will love your mlily sleep item and are dedicated to giving you the best night of sleep through our superior products. If your mattress is defective or damaged during delivery, our u. S. -based customer support team will happily work with you to address any concerns to make it right.


Batteries required: No


Included Components: Memory Foam


Age Range Description: Adult


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Sep 22

Yes, absolutely! You may return this product for a full refund within 100 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.

Top Amazon Reviews


  • Best RV Upgrade
Style: 10 Inch-Gel Size: King Short
The first thing we do in any new RV is upgrade the mattress. We recently downsized from a 42' 5th wheel that had a full king to a 31' TT and we immediately took out the factory queen and replaced it with this in a short king. It works perfectly for the space, expanded quickly and is so ridiculously comfortable. You barely feel the other person moving, it's soft but supportive. I have arthritis in my back and hips, and I slept pain free even after a day of hiking. Awesome quality for the price. ... show more
Reviewed in the United States on August 14, 2025 by SNK

  • comfort and quality
Style: 6 inch Size: Twin
When the box showed up at my front door, I was kind of surprised at how small it was. I didn’t think a whole mattress could fit in there! It was packed up really tight, but once I cut the plastic and unrolled it, it started growing like magic. It took just a few hours to fully puff up, and it looked way better than I expected. Sleeping on it has been awesome so far. It’s not too soft and not too hard—it’s just right. I got it for my little brother’s bunk bed, but I tried it first and honestly, it’s super comfy. He sleeps through the night without waking up now, which is amazing. Even when I sit on the edge, it doesn't squish down too much. The best part is how easy it was to carry upstairs. Since it came in a box, I didn’t need help getting it to his room. I also liked how clean and fresh it smelled—no strong odors or anything weird. It fit perfectly in the bed frame and didn’t need any extra tools or pieces to set up. One thing I noticed is that it’s a bit thinner than regular mattresses, so you might want to use a thick blanket underneath if your bed frame has big gaps. Also, it doesn’t come with a cover, so you’ll need to buy one. But overall, it’s a really good buy and I’d totally recommend it to anyone needing a mattress for a kid or guest bed. ... show more
Reviewed in the United States on April 25, 2025 by Hong

  • Perfect Mattress for Kids or Guest Rooms!
Style: 6 inch Size: Twin
I purchased the 6-inch Twin Mattress in a Box for my child’s bunk bed, and I’m thoroughly impressed! It arrived quickly and was super easy to unbox and set up—just unroll and let it expand. Within a few hours, it was fully fluffed and ready to use. The medium firm memory foam provides just the right balance of comfort and support. My child sleeps through the night without tossing and turning, and I even tried it out myself—it’s surprisingly comfortable for a thinner mattress! It’s the perfect fit for a daybed, bunk bed, or any small space where you need a quality mattress without breaking the bank. No weird odors, no lumps, just a great value for the price. Highly recommend this for kids, guests, or even a dorm room setup. ... show more
Reviewed in the United States on April 10, 2025 by Abdelhadi ACHAIBOU

  • Mattress
Style: 6 inch Size: Twin
Good mattress. You take them right out of the box and they inflate pretty quickly maybe took an hour to be completely full. They are for my kids and they both seem to love them. I do feel that they are a little hard (just my preference) but otherwise very comfy! And also good quality and non toxic which is why I chose them! ... show more
Reviewed in the United States on May 13, 2025 by Holly Buckner

  • Great full size mattress
Style: 8 inch Size: Full
The mattress was packed nicely, had a smell but after a month of use it went away, and it's soft but not too soft for my back. It is super comfortable, and my back doesn't hurt. Easy to clean, excellent quality, perfect size for the full-size bed frame I bought separately.
Reviewed in the United States on August 21, 2025 by GNN

  • Perfect mattress for kids!
Style: 6 inch Size: Twin
I recently purchased the 6-inch twin mattress for my child's bed, and it's been a great choice! It arrived quickly, was easy to unbox, and expanded to full size within hours. The memory foam offers a perfect balance of comfort and support—medium firm, just as described. My child sleeps soundly through the night now. Great quality at an affordable price—highly recommend! ... show more
Reviewed in the United States on April 25, 2025 by Alex S.

  • Most comfortable mattress I've ever owned
Style: 12 inch Size: Queen
I never thought I'd find a comfortable mattress....til now. I ordered my queen mattress last November. I wouldn't trade it for anything. It is like sleeping on a cloud. It's nice and thick, but standard queen sheets fit it well. I used to flop around a lot, but this mattress doesn't really "let" you do that (difficult to explain). If you're ready for a good night's sleep, buy it. It isn't like a regular mattress so give yourself some time to get used to how different it is. Sleep well! 😴 💤 ... show more
Reviewed in the United States on July 25, 2025 by Shelly B.

  • But it!
Style: 6 inch Size: Twin
Very comfortable. Purchased for our then 2 year old grandson. An adult could easily sleep on this mattress. Can’t express enough the comfort of it! Arrived in a small box, unrolled it, and let it sit out for a day or two and it straightened right out.
Reviewed in the United States on September 11, 2025 by Diane R.

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