Cold feet in winter? Lake's winter inner sole is a layered package that keeps your feet warm. The inner sole forms an insulating barrier that prevents the heat generated by your body in the shoe from staying there and the cold from penetrating the shoe from below. The outer felt layers wick away moisture and keep the foot dry. A second reflective layer ensures that heat and cold are not transferred, while the inner core of air pockets finally forms an insulating barrier so that the heat or cold is not dissipated.