Orthopedic Polyfoam Wheelchair Cushion, Poly/Cotton Cover - Black Exclusive from DuraCare by Unique Imports. The Best Wheelchair Seat Cushion Support Reduces pressure on the spine and coccyx to ease back pain Made of molded, highly-resilient foam. Size 15" x 14" x 3" has a slight wedge to help take off the pressure from your back! Ideal for travel, home or office use or just about anywhere Includes removable and washable cover. top layer is a durable Black cloth which is easily cleanable