About the Pro Shoe Covers Pro Shoe Covers are constructed of a premium nylon material. This same material is used to manufacture such items as luggage, tarps, backpacks, and hammocks. The fabric is strong and permanently sealed with a finish that offers a moisture barrier, so you do not leave wet or dirty tracks. The sole is made from a rugged, waterproof, non-slip material. These Shoe Covers are double stitched and reinforced to ensure a long lasting life. Pro Shoe Covers are durable, reusable over the shoe covers. These are machine washable shoe covers with a rubber sole and elastic band to keep the covers snug on your feet. Sizes: Product Name Fits Men's Sizes Fits Women's Sizes Pro Shoe Covers - Small N/A 8 and smaller Pro Shoe Covers - Medium 7 - 10 8.5 - 10.5 Pro Shoe Covers - Large 10.5 - 13 11+ Pro Shoe Covers - Extra-Large 13.5 - 17 N/A