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. Shell: Nylon. Lining: Nylon. Insulation: Polyester (100g Body & Hood, 80g Sleeves)..