The benefits of gel and foam are well documented. Gel Pro Elite Wheelchair Cushion are made of a high-density foam shell surrounds a uniquely styled gel bladder to form a comfortable wheelchair cushion that is unsurpassed in pressure redistribution. Our segmented gel bladder contains an aqueous, highly viscous gel which provides for proper immersion and envelopment around the bony prominences. Gel-Pro wheelchair cushions help to stabilize and reduce the "rocking"_ motion found in other types of gel cushions. The Gel-Pro line of cushions are covered in a traditional waterproof vinyl and low-shear nylon material, which helps reduce heat and moisture build-up. Gel Pro Elite Wheelchair Cushion stocked in 18x16 , available up to 24 inches.