The Under Armour Women's ColdGear Reactor Vest is a popular choice for women's activewear. This vest is made from a lightweight and breathable material that provides warmth without adding bulk. It features a full zip front, a stand-up collar, and two side pockets. The vest is equipped with Under Armour's ColdGear Reactor technology, which adapts to your activity level to provide the right amount of warmth. Whether you're engaging in outdoor activities or layering it under a jacket, this vest is a practical and stylish choice.