WARNING: Before you buy the product, please check the seller name first which is (HT Medical ) if not, do not purchase the product, if you purchase we are not responsible for the quality of the product you received, please note -- memory foam memory foam memory foam medical seat with an outer soft plush cover that is safe and sanitary to use: round medical seat relieves body pressure so that it is evenly distributed over hip and hip bones Spine mode, promotes long-term seating without pain or fatigue. Relief from lower back and fistula, activates leg circulation and used for office chairs, car chairs and wheelchairs