Surface is 100% nylon with a 100% ployester inner lining and backing. Soaker is 65/35 polyester rayon blend. Keeps chair clean, dry and looking new. Ideal for chairs, cars & wheelchairs. Protects sensitive skin from moisture. Absorbent inner layer and vinyl backing shields seating surface from fluid damage and soiling. Cuts down on the need for costly professional steam cleaning. Absorbs up to one cup. Size: 21" x 22". Waterproof. Machine washable and dryable.