Add additional comfort to your seating with our 20 x 20 in. seat cushion. This seat cushion features a tapered shape with a 2.5 in. cushion thickness. The interior consists of Urethane foam and Polyester fiber wrapped with durable fabric. This high-performance fabric is constructed to be UV-resistant, fade-resistant, mold and mildew resistant, spill-proof, and stain-resistant to ensure great quality over time. Secure this seat cushion to your chair with the two ties to keep it firmly in place.