Features: Vinyl, Durable, Heavy-gauge Cushion. Durable, heavy-gauge cushions conform to the natural contours of the body for comfort. Foam cushion comes with a removable cover that is washable and wrinkle resistant. Foam cushion comes with a removable cover that is washable and wrinkle resistant. Vinyl, inflatable cushion helps provide support and comfort when sitting for long periods. Durable, heavy-gauge rubber cleans with just a damp cloth, and is easy to inflate and deflate with convenient push-pull valve Foam (12-1/2" x 16" x 2-3/4") Durable. Heavy-gauge cushion. Vinyl. Push-pull valve.