The Under Armour Women's ColdGear Reactor Vest is a popular choice among women who want a sleeveless high-visibility activewear vest. This vest is designed to keep you warm and comfortable during outdoor activities. The high-visibility design ensures that you'll be seen in low-light conditions, making it ideal for early morning or late evening workouts. The packable feature allows for easy storage and transportation, making it a convenient option for travel. With its innovative ColdGear Reactor technology, this vest adapts to your activity level to provide the right amount of warmth. Stay visible and comfortable with this top-rated activewear vest.