Slip Cover: 100% Woven Polyester, Foam Cover: 100% Polypropylene, Foam: 100% Polyurethane DURABLE OUTDOOR CUSHION: Cushion measures 17"W x 15"D x 2"Thick GARDELLE ONE FABRIC SYSTEM: Gardelle One is a solution-dyed durable woven polyester fabric with a protective water repellent coating and water-resistant laminated backing WATER-REPELLENT COATING AND BACKING: Water-repellent coating resists stains and helps keep rain out and your cushion foam protected PATENTED ATTACHMENT SYSTEM: Patented Attachment System adjustable belted hem with click-close straps provides a tight, customizable fit to keep your cushion where you want it HEAVY-DUTY OUTDOOR CUSHIONS: Bound interior seams are engineered to provide strength and durability at the most demanding joints