Cushion measures 18"W x 18"D x 2"Thick One-year limited warranty Gardelle One is a solution-dyed durable woven polyester fabric with a protective water-repellent coating and water-resistant laminated backing Water-repellent coating resists stains, helps keep rain out, and protects your cushion foam Patented Attachment System: Click-close buckles provide a tight, customizable fit to keep your cushion where you want it Zippers lock to keep a tight closure and make stuffing the cushion easier Foam is designed for comfort and support all season long Durable fabric provides protection from harmful UV rays