Bicycle seat-shaped cushion is designed to take the weight off your thighs and bottom, helping to eliminate sharp radiating pain in the lower back, spine and legs. The removable, reversible cover features a plush layer of fleece-like material for added comfort and warmth on one side, and a breathable poly material to keep you cool on the other. Hand-filled to achieve the perfect density, and engineered to help relieve compression of the sciatic nerve. Approximately 15 ½ L x 10 ½ W x 2 ½ D size fits any chair, allowing you to sit pain free for as long as you want! Imported made of acrylic, poly and cotton.