For the days when you just want to keep the wind and rain out without any extra bulk. The thin, stretchy fabric forms to the shoe for a perfect, aero fit while blocking the wind and wet. Waterproof non-insulated aero bootie for cool and wet conditionsWaterproof PU-coated stretch fabricSilicone bead at inside top of cuff to seal water outWaterproof zipperHigh-durability material under foot