One Size : Dimensions 45 x 41cm. Reduce pressure on your back and tailbone as the cushion conforms to your natural body contours. Padded wheelchair cushion fits nicely, helps lessen pressure, friction and pain from sitting for long periods. Makes relaxing or napping in a wheel chair comfortably warmer. Durable Cushion is made of high density sponge that will not crack or crumble. Besides standard wheelchairs, electric wheelchairs, transport chairs and scooters, it cozily cover rockers, recliners, wicker or patio chairs too. Warms up hard wood or leather seats, arm rests and backs.