Skil-Care Foam Seat Cushion with Integrated Wheelchair BackrestWheelchair 16" Backrest Wheelchair 18" Backrest Backrest Seat Combo This is a portable cushion that provides added comfort to the back and seat of any 16" to 18" chair. It cushions the back with 1. 5" foam and cushions the seat with a foam pad. This product enhances comfort and prevents pressure sores. It is covered with a stretch. wipe clean Low Shear II removable cover. The cushion folds up and is convenient to carry with a loop. The cover can be