A variety of shapes and materials that are designed for comfort to support proper positioning; The filling is made with an appropriate balance of tiny beads and filling for a good fit and hold. The 3D construction mesh material prevents stuffiness and is lined with a non-slip knit construction to keep you comfortable and in proper posture. Material: Filling: [1] ~ [7] Polyester cotton, polystyrene beads [8] Polyester cotton, Outer material: 76% polyester, 24% nylon, Lining: 100% polyester. Handling: Washing (hand wash) Product for medical care, care, hospitals, and facilities. Doctor Nurse Product published in Matsukichi Medical General Catalog.