Stay warm and comfortable during your workouts with the Under Armour Women's ColdGear Reactor Vest. This vest is equipped 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 maximum comfort. The vest also features a fitted silhouette for a flattering look. Whether you're hitting the gym or going for a run, this vest will keep you cozy without restricting your movement.