The SL Pro Wind Jacket excels on blustery-cold days. With a 100% Recycled Polyester Wind Shell, this jacket keeps wind from chilling your bones, all while being packable enough to throw in a pocket while you head up the next ascent. Top it off with our HyprViz color and reflectivity treatments that increase your visibility to motorists, and youre left with a versatile option for a variety of conditions.