100% Polyester Works great for both indoor or outdoor use Seat cushion is filled with 100-percent polyester fiber sourced from North Carolina and filled in Nebraska 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