See details  Foam Seat Cushion Waterproof Small 2” thick Size: 15” x 15” x 2” (37 x 37 x 5 cms) Price: £ 21.60 See details  Foam Seat Cushion Waterproof Standard 2” thick Wheelchair Seat Cushion, foam filled, waterproof Size: 18” x 18” x 2” (45 x 45 x 5 cms) Price: £ 22.45 See details  Foam Seat Cushion Waterproof Wide 2” thick Size: 20” x 18” x 2” (50 x 45 x 5 cms) Price: £ 23.25 See details  Foam Seat Cushion Waterproof Extra Wide 2” thick Size: 22” x 18” x 2” (56 x 45 x 5 cms) Price: £ 24.00 See details  Foam Seat Cushion Waterproof Small 3” thick Size: 15” x 15” x 3” (37 x 37 x 7.5 cms) Price: £ 29.85 See details  Foam Seat Cushion Waterproof Standard 3” thick Size: 18” x 18” x 3” (45 x 45 x 7.5 cms) Price: £ 30.70 See details  Foam Seat Cushion Waterproof Wide 3” thick Size: 20” x 18” x 3” (50 x 45 x 7.5 cms) Price: £ 31.50 See details  Foam Seat Cushion Waterproof Extra Wide 3” thick Size: 22” x 18” x 3” (56 x 45 x 7.5 cms) Price: £ 33.00