100% Cotton Dimensions: Seat: 18.5"W x 16"D. Back: 20"W x 6"D. The canvas can only fit director chairs that have round inserts with the dowel-to-dowel distance of 19" or less. Made of 100-percent cotton. Heavy duty; Machine washable. Wooden chair frame NOT included. Replacement seat and back will be initially very tight; canvas will stretch over time.