Gel E Wheelchair Cushion 18 x 16 x 3 Knee Walkers Parts Acces A thin and flexible design Commode Shower Chair Accessori A thin and flexible design moves with the body during everyday activities as well as swimming and other exercises Large size is for thighs measuring 22–24 inches: Measure mid thigh circumference Pressure reducing cushion designed to assist in the prevention treatment and management of pressure ulcers * Viscous gel provides optimized pressure reduction support and comfort * Fire retardant polyurethane foam shell * Removable and replaceable cover has water resistant Top and Non Slip vinyl base * Weight Capacity: 275 lbs * 18 Month Limited Warranty on cover and cushion * Compare to Mason Gel U Seat Blue Chip Gel Pro DLX Invacare Comfortmate Invacare Infinity Lo Contour & FLA Postura Gelfoam *