Mattress Fabric: The mattress cover is skinfriendly knitted cotton fabric. The midfilling is microfiber down filling, providing good support when you lie on the mattress and helping you enjoy a more comfortable sleep. Ergonomic Design: This mattress adapts to the body's curves and supports proper cervical spine alignment, which can improve sleep quality and relieve back stiffness. It elevates the sleeping position and relaxes the spine for orthopedic benefits. Notes: Please sundry the floor mattress first, as it will recover thickness more quickly in the sunshine. Note that the futon mattress is compressed into a storage bag for transport, so please allow at least 23 days to recover full thickness. Versatile Uses: It can be used as a bedroom futon, living room futon, mat, floor mattress, sleeping floor mat, tent mat, guest mattress, or Japanese bed mat. It can also serve as a play mat or floor pillow bed, and it is easy to take with you in the car for trips, making it a reliable companion for your family.