The Under Armour Women's ColdGear Reactor Vest is a popular choice among active women who need reliable insulation during their workouts. This vest is equipped with ColdGear Reactor technology, which adapts to your activity level to provide the right amount of warmth. It features a lightweight and breathable design, allowing you to move freely without feeling restricted. The ColdGear Reactor Vest also has zippered hand pockets, perfect for storing small essentials. Whether you're hitting the gym or going for a run, this vest will keep you comfortable and protected from the elements.