Economy Gel/Foam Wheelchair Cushion 18 x 16 x 3 18 W x 16 D x 3 * Custom and bariatric available (bariatric sizes increase weight capacity to 450 Lbs.) * 250 Lbs. weight capacity * Segmented gel bladder contains an aqueous highly viscous gel surrounded by a high density foam shell that is covered using a fluid-proof medical grade beige rip-stop vinyl * All cover materials and foam are fire-retardant and anti-microbial