These our one of our most popular shoe covers or "booties" because they are fantastic in a variety of situations and should be in every cyclists gear bag. The Barrier Lite Shoe cover provides a lightweight, protective covering for cyclists wanting protection on cool, windy days. The are wind tunnel tested and very popular with time trialists. The Barrier Lite shoe covers also offer some rain protection for those choosing to ride on wet days. They feature a new, pull-on design that is simpler to use .