The Under Armour Women's ColdGear Reactor Vest is a popular choice among active women who want to stay warm during their workouts. It is made from a lightweight and breathable fabric that wicks away sweat and dries quickly. The vest features ColdGear Reactor insulation, which adapts to your activity level to provide the right amount of warmth. It has a slim fit design with a stand-up collar and a full zip closure. The vest also has zippered hand pockets and a media pocket for convenient storage. Whether you're going for a run or hitting the gym, this vest will keep you comfortable and stylish.