FOLDABLE & RESUABLE -- Foldable step in sock shoes Cover, it is made of PU, polyester and iron material; Reusable, you can use them over and over again without wasting extra plastic. ANTI-SLIP & WASHABLE -- Anti-slip, keeps you safe even the floor is wet; A safe way for people to cover their shoes without struggle, easy and convenient. Washable, but not machine washable. The covers are made of waterproof PU, but DO NOT let the height of water exceeeds your shoes. EASY TO WEAR AND TAKE OFF -- Easy to put it on your shoes, just need to set the shoes cover flat on a level surface, step on and the device will wrap itself around the bottom of your shoes immediately. To take off the shoe cover, you just need to peel it off your shoes, and take it with you. MULTIPLE USAGE -- Can use it in many ways, not only for workers, but also for painters, car mechanic, movers, gardening,etc Specification : Material : PU, polyester Size :S 30-34 yards /M 35-39yards /L(40-45yards)