fabric: The surface is a waffle weave fabric that is comfortable, breathable, and soft to the touch, providing good support for a peaceful sleep on this futon mattress topper. Multilayer structure design: Available in 5 cm or 8 cm thickness, it is filled with compressive fiber cotton and space memory foam. The layered construction resists collapse and deformation, keeping the topper fluffy and comfortable to lie on. Anti slip and breathable: The bottom features an anti slip breathable mesh to improve air circulation and heat dissipation. Four corner elastic bands firmly fix the topper to the bed or to thicker mattresses, preventing shifting or sliding off. Ergonomic design: The Japanese floor bed concept emphasizes ergonomics, with the mattress conforming to the body curve to provide good spinal support, relieve waist and back pressure, and help relax the body and mind to improve sleep quality. Use scenarios: Dormitory or student rooms: Use as a topper on existing beds or for floor sleeping to upgrade comfort in tight dorm spaces. Guest rooms: Add as a layer to enhance guest comfort and stability, keeping the bed feeling secure for visitors. Living and relaxation spaces: Suitable for floor lounging, reading, watching TV, or informal naps, offering ergonomic support during extended periods of sitting or lying on the floor.