The CCN windproof Shoe Cover is designed to reduce the effect of wind chill on your feet. The three-layer membrane fabric will cover your shoe and help prevent unwanted drafts. The shoe covers are designed to fit snugly over your cycling shoes. Use the durable YKK locking rear zipper to gain access. The fabric affords a small degree of stretch so when fitted they are sleek and snug around the shoe and ankle. Fasten the top tab to further secure the zipper.