Product Details 3 inch H x 16 inch W x 18 inch D. Caring for you. Premium quality self-molding memory foam provides a comfortable seating surface. Helps maintain proper posture and provides stability while seated. Hypo-allergenic. Removable washable cover. Fits most standard wheelchair and transport chair seats. Sitting is more comfortable with an orthopedic seat cushion that is designed to fit the contours of your body. The Carex seat cushion is ergonomically designed to promote proper posture and provide comfort, support and stability while seated. The high quality memory foam in the Carex seat cushion retracts fast to provide instant relief and comfort, and provides slow memory foam recovery for longer support. The removable soft polyester and rayon cover zips off easily for machine washing. Made in China.