100% High Spun Polyester Imported Works great for both indoor or outdoor use. Will fit a wide range of standard size chairs. Seat cushion is filled full with 100-percent polyester fiber. These cushions are very comfortable. Attached ties keep D 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 Measures 20-inches long x 20-inches wide x 3-inches high