WARNING : Before you buy the product make sure the seller name first is (HTmemoryfoam ) If not, don't buy the product, if you buy we are not responsible for the quality of the product that will arrive you, so be alert --- Description: High quality memory foam memory foam memory foam back with premium cloth outer cover Washable Usable: Provides spine comfort and evenly distribute pressure over paragraph And prevention of back muscle pain is perfect for the office chair, car chair, and wheelchair.