The Medline Combo Cushion is a seat and back cushion in one. It is all one piece and is made of a molded foam that incorporates Progressive Support Technology to ensure the proper degree of cushion firmness for the highest possible pressure relief. The Combo Cushion has a hook and loop strap for attachment to the wheelchair and the cover is removable, washable, flame retardant and fluid proof. The Combo Cushion is a unique and one of a kind product available in five basic sizes.