The Under Armour Women's ColdGear Reactor Vest is a top-rated activewear vest for cold weather. It is made with a water-resistant shell and filled with synthetic insulation for warmth. The vest features a hooded design and a full-zip front for easy layering. It also has zippered hand pockets to keep your hands warm and store small essentials. With its innovative ColdGear Reactor technology, the Under Armour Women's ColdGear Reactor Vest adapts to your activity level to provide the right amount of warmth.