The Under Armour Women's ColdGear Reactor Vest is designed to keep you warm and comfortable in cold weather conditions. It features ColdGear Reactor insulation that adapts to your activity level, providing the right amount of warmth when you need it. The vest also has an adjustable hood that can be easily tightened or loosened to suit your needs. With its lightweight and breathable design, it is perfect for layering or wearing on its own. Whether you're running, hiking, or simply running errands, this vest is a reliable choice.