Stay warm and comfortable during your workouts with the Under Armour Women's ColdGear Reactor Vest. This vest is designed with ColdGear Reactor technology, which adapts to your activity level to provide the right amount of warmth. The half-zip closure allows for easy on and off, while the lightweight and breathable fabric ensures optimal comfort. The vest also features a fitted silhouette for a flattering look and a stand-up collar for added protection against the cold. Whether you're going for a run or hitting the gym, this Under Armour vest is a great choice for active women.