Slip Cover: 100% Woven Polyester DURABLE OUTDOOR CUSHION COVER: Cushion cover measures 21"W x 20"H x 4"Thick, cushion foam sold separately PATIO CUSHION COVER WITH WARRANTY: One-year limited warranty GARDELLE ONE FABRIC SYSTEM: Gardelle One is a solution-dyed woven polyester fabric, engineered to resist fading and helps to keep colors vibrant WATER-REPELLENT COATING AND BACKING: Water-repellent coating and backing resists spills and helps keep out the rain QUALITY CONSTRUCTION: Durable, high-quality stitching adds longevity to your cushion cover