The Under Armour Women's ColdGear Reactor Vest is a highly-rated sleeveless insulated high-visibility thermal activewear vest designed for cold weather performance. It features ColdGear Reactor insulation, which adapts to your activity level for the right breathability and warmth. The vest has a water-resistant and wind-resistant outer shell to protect you from the elements. It also has zippered hand pockets and an interior chest pocket for secure storage. The ColdGear Reactor Vest is lightweight and comfortable, making it suitable for a variety of outdoor activities. Whether you're running, hiking, or skiing, this vest offers both style and functionality.