The Under Armour Women's ColdGear Reactor Vest is a sleeveless activewear vest designed to keep you warm in cold weather. It is made with a lightweight and breathable fabric that is also water-resistant. The vest features ColdGear Reactor insulation, which adapts to your activity level to provide the right amount of warmth. It also has a zippered front and hand pockets for storage. Whether you're skiing, snowboarding, or just running errands, this vest will keep you comfortable and protected from the elements.