New Six Generations Japanese Mattress: According to modern sleeping habits, the four generations of the basis of upgrading and improving the new six generations of mattresses; 9 layers of structure, 5 layers of padding, long-time use does not collapse, Soft and breathable microfiber fabrics are more comfortable and provide a better sleeping experienceSleep Upgrade: Made of premium high-density foam. It provides good support to the body and has the function of dispersing body pressure, so even if you have back pain, you can sleep comfortablyComfort Upgrade: Obsessed with the details, the use of new Japanese mattress technology, microfiber fabrics using three-dimensional articulated sewing lattice process, and fixed filler, more flat and comfortableVersatile Use: Twin Size: 39" wide x 80" long, Weight: 11 lbs. Can be used as a Bedroom Futon/Living Room Futon/Tatami Mat/Floor Mattress/Sleeping Floor mat/Tent Mat/ Japanese Mattress, also can also be carried with the car, Anywhere is a good companion for the familyImportant Note: After receiving the product, please allow 3 days (in warm weather) to 3 weeks (in cold weather) for the product to fully expand. NOTE: To prevent damage to your bedding, please use a comforter cover or sheet