Wheelchair Cushion 18x16x3 Convoluted Features a comfortable convoluted foam topper with a high density base foam * The cover has a four-way stretch top with a no-slip base fabric and has a strap at the back to secure the cushion firmly to the chair * Accommodates a wide range of body shapes sizes and weights * 300 lb maximum weight capacity * 2 year limited warranty * Designed to meet the requirements of HCPCS Code: E2601