Comfortable back medical pillow made of high quality German foam material with washable premium fabric outer cover. Usage: medical back pillow provides comfort to the spine especially the lumbar spine and evenly distribute pressure on the vertebrae and prevent back muscle pain Perfect for office chair, car chair and wheelchair. -- Warning: before purchasing the product, please check the seller name first (HT Medical) if not, do not buy the product, if you buy we are not responsible for the quality of the product you received, please note