Waterproof Stretch Seat Cover, Set of 2 help keep chairs clean, dry and looking newer, longer. Stretch design fits most chairs and stools, going on with ease and staying securely in place thanks to elasticized edges. Waterproof fabric repels spills and stains and is machine washable for easy-care convenience. This pair of waterproof seat covers is great for freshening up old, worn seats, too! Polyester.