This innovative cushion counteracts the wear of a wheelchair seat sling to encourage better posture and improve comfort. It has a dense, fire retardant foam inner for comfort and a wipe clean, waterproof cover. Size 430 x 430mm 17 x 17"; Max depth 50mm 2";Width 460mm 18"; Depth 405mm 16"; Height 50mm 2"; Weight 1kg. For further information please contact your local shop or call 01908 644133. We look forward to hearing from you.