ColdGear Reactor is intelligent insulation that adapts to your activity level for the right breathability & warmth for what you're doing. UA Storm technology repels water without sacrificing breathability. Windproof materials & construction shield you from the elements. Lightweight, water-resistant, quick-drying performance. Zippered hand pockets for extra warmth & protection. Stand collar with chin guard for superior comfort & coverage. Machine washable & hypoallergenic.