100% High Spun Polyester Imported When the cushion is laying flat, it measures 45 inches long x 20 inches wide x 3 inches high. When the cushion is in a chair, the bottom seat cushion measures 18 to 20 inches wide and 16 to 18 inches deep, and the top or back part of the cushion measures up 22 to 24 inches. Attached ties keep adirondack cushion securely tied to your chair or patio furniture, circle tacked to eliminate bunching of filling Lightly spot clean or hand wash with a mild detergent and cool water, allow to air dry Cushion works great for both indoor or outdoor use. Adirondack cushion is filled with 100-percent polyester fiber.