1.4 LAYER STRUCTURE The layers are made of cotton linen fiber, and the middle 2 layers are filled with feather silk cotton and reinforced cotton core. The back features professional silicone particles with a nonslip base. 2.COMFORT MATTRESS The futon mattress automatically adjusts to body weight and sleeping position, relaxing the spine for orthopedic benefits. The separately quilted pads at the and bottom provide good volume, while the 4layer structure ensures maximum sleeping comfort. 3.PORTABLE FOLDABLE Japanese futon setups don't require a bed platform. They can be easily rolled up and stored in a closet or corner, freeing up space during the day. Ideal for minimalists, guests, or frequent movers. 4.WIDE USE Designed to conform to the human body's natural curves, this mattress significantly improves sleep quality and alleviates most back pain caused by stiffness. A choice for bedrooms, hotels, dormitories, hospitals, camper vans, travel, and guest use.