PolyLite Shoe Covers are ideal for use in nonhazardous environments such as hospitals, clinics, laboratories, food processing facilities and painting applications. Disposable polypropylene covers are made of cool, comfortable and lightweight polypropylene. Nonskid bottom makes covers safer to use so you can avoid slipping while protecting your shoes. Elastic on the top secures the covers onto your shoes. Large size is 16" long.