Add additional comfort to your seating with our 20 x 18 in. Remy Linen Outdura™ seat cushion. This seat cushion features a tapered shape with a 2.5 in. cushion thickness. The interior consists of 50% Urethane foam and 50% Polyester fiber wrapped with premium 100% solution-dyed acrylic Outdura™ fabric. It is a customer favorite because of its durability and low maintenance care. This high performance fabric is manufactured in the United States and 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 firmly in place.