The Under Armour Women's ColdGear Reactor Vest is a popular choice for women who want a lightweight and breathable insulated vest. It is made with a durable polyester shell and features ColdGear Reactor insulation, which adapts to your activity level to provide the right amount of warmth. The vest has a full zip closure and a stand-up collar to keep the cold air out. It also has two zippered hand pockets and a chest pocket for convenient storage. The ColdGear Reactor Vest is designed to be water-resistant, making it a great option for outdoor activities in variable weather conditions. Whether you're going for a run or hitting the gym, this vest will keep you comfortable and protected.