Great Stretch Material The fabric armrest covers are made from 94% polyester and 6% spandex, which is soft, comfortable and stretchy. Furniture Protector The stretchy arm slipcovers renew and decorate your chair armrest. It can protect your chair arm from stain, scratch. Stretchy & Easy To Use The elastic armrest covers is more stretchable. It can perfectly covers the armrest, which is not easy to slip or shift. Specification: Material: 94% polyester, 6% spandex Weight: 310g Installation Size: L: 17.9"-20.9"?W: 6.4"-7.9"?H: 7.9" -10.9" Package include: 4 x Armrest Cover