Blue Chip Gel Pro Low Profile Wheelchair Seat Cushion (18″ X 16 X 1.75″). An excellent choice where a low profile cushion is necessary. Our segmented gel bladder contains an aqueous, highly viscous gel which provides for pressure redistribution, proper immersion and envelopment around the bony prominences. The low shear nylon cover is anti-microbial and fluid-proof to protect the inner core. SPECIFICATIONS: – Dimensions: 18″ x 16″ x 1.75 ” – Top: Med-Flex VPF High Density Foam – Center: Ultra soft viscous gel bladder – Base: Med-Flex VPF High Density Foam – Top Cover: Vyvex I- Low shear, fluid proof anti-microbial nylon – Bottom Cover: Medical grade nylon – Weight Capacity: Supports 250 lbs. – 12 Month Warranty