The Under Armour Women's UA ColdGear Reactor Jacket is a lightweight Insulation layer designed for cool to cold weather comfort, wherever you Are. Featuring ColdGear? Reactor Insulation, this jacket will respond to your activity level, keeping you comfortable while on the move without overheating, and warmer when stationary. When you don't need it on, it packs down into its own chest pocket for compact storage or transport. Features of the Under Armour Women's UA ColdGear Reactor Jacket Storm2 - Highly water-resistant and windproof UA ColdGear Reactor intelligent Insulation adapts to any activity for non-stop comfort and total versatility Lightweight, water-resistant, quick-drying Performance Machine washable and hypoallergenic Packable - jacket stows neatly into its own chest pocket Fleece lined zippered hand pockets for comfort and to keep valuables secure Adjustable hem keeps the warm in and the elements out Chin guard for comfort UA MagZip