Stay warm and comfortable during your outdoor activities with the Under Armour Women's ColdGear Reactor Vest. This vest is made from a blend of polyester and elastane, providing excellent insulation and stretch. It features the ColdGear Reactor technology, which adapts to your activity level to provide the right amount of warmth. The vest also has a stand-up collar, zippered hand pockets, and a full-zip front. Whether you're running, hiking, or skiing, this vest will keep you protected and cozy.