Description: The Medical Backrest is comfortable bolster made of high quality German foam material with luxurious washable fabric outer cover. USAGE: The medical backrest provides spine comfort and evenly distribute pressure over the vertebrae, prevention of back muscle pain is ideal for office chair, car chair, wheelchair. -- WARNING: Before you buy the product, please check the seller name first which is (HT Medical ) if not, do not buy the product, if you purchase we are not responsible for the quality of the product you received, please note