A waterproof 600-denier ballistic nylon shell with Exo-Stitch™ taped seams keeps this jacket going strong. Exo-Tech™ armor in critical impact areas provides protection. A full ventilation system complete with zippered vents keeps you cool. A removable EverHeat™ Thermal liner lets you plug in warmth when you need it. A kwikWick® liner keeps you dry and comfortable.