Comfy & Ergonomic Support: Our 2" D-shaped seat cushion, made with 100% polyurethane high-resilience foam, protects your tailbone, relieves pressure, and relaxes muscles goodbye stiff seats and endless posture adjustments Durable & Comfortable: Made of 100% polyester, the cushion cover has reinforced edges for lasting durability and a wrapped zipper that protects furniture. Soft and breathable, it keeps your cushion comfortable and inviting Enjoy steady comfort: The cushion stays in place with a non-slip base and optional ties, so you can sit without slipping or readjusting. Relax and focus on work or leisure knowing your seat won t shift Hassle-free care: The removable zippered cover makes cleaning easy machine wash cold, tumble dry low or air dry. No ironing, no bleach, and do not wash the foam insert. Your cushion stays fresh with minimal effort Fits Most Chairs: This 17 16 2" cushion provides soft, supportive comfort for dining, kitchen, folding, or rocking chairs. Requires assembly.