Polyester Includes one outdoor bench cushion (51" x 18" x 5") with a plush, overstuffed construction for enhanced comfort and longevity Cushion cover is made from durable 100% outdoor polyester fabric that stands up to sun and water exposure Cushions are filled with a soft polyfiber material made from 100% recycled, post-consumer plastic bottles Attached string ties help keep cushion securely attached to outdoor furniture Circle tack construction prevents cushion fill from shifting and bunching