The Under Armour Women's ColdGear Reactor Vest is a top choice for women who need a sleeveless insulated lightweight vest for cold weather activities. It is made from a combination of polyester and elastane, providing excellent warmth and stretch. The ColdGear Reactor Vest features UA Storm technology, which repels water without sacrificing breathability. It also has ColdGear Reactor insulation, which adapts to your activity level for the right breathability and warmth. This vest has zippered hand pockets and a secure chest pocket, offering convenient storage options. Whether you're running, hiking, or skiing, this vest will keep you warm and comfortable.