Not a wheelchair cushion. This versatile cushion is vinyl covered with a wood base. Used to elevate the seating level of a normal chair to take the stress off legs and knees when customary furniture heights are too low. Comes complete with an over the shoulder carry strap to allow easier carrying to events outside the house. Vinyl covered. Size: 16" x 16" x 4" (40 x 40 x 10cm).