The dhb windproof overshoe is designed to reduce the effect of windchill on your feet the membrane will cover your shoe and help prevent unwanted drafts the overshoes are designed to fit snugly over your cycling shoes use the durable ykk locking rear zip 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 reinforced kevlar toe heel and base improve the longevity of the