Reusable Washable Shoe & Boot Covers, Made in USA, NonSkid & Lab Tested, 4 Sizes Nylon Upper - AntiSkid Sole Machine Washable - Average Lifespan 6 to 12 Months ASTM Safety Rated for Traction Made in the USA - Quality Workmanship No Wet or Dirty Tracks - Moisture Barrier Inside Four Sizes Available for Shoes 4 to 17 for Men & Women - See Sizing Below