Lift Assist Seat...This lifting cushion provides assistance when the user has difficulty getting up from a seated position. It may be placed on an existing chair to lift up to 80% of the users weight. A high-density foam cushion provides exceptional comfort and support and adds only 25mm (1") to the height of the seat. Covered in durable, easy to clean knitted polyester. The six settings adjust easily between 40 and 110kg (61/4 and 171/4 Stone). Maximum User Weight: 17 Stone (110 kg).