The Under Armour Women's ColdGear Reactor Vest is a popular choice for women's sleeveless waterproof and windproof activewear vest. It is made with a water-resistant and windproof shell, ensuring that you stay dry and protected from the elements. The vest features ColdGear Reactor insulation, which adapts to your activity level for the right breathability and warmth. It also has a high-visibility design, making it suitable for outdoor activities in low-light conditions. With its lightweight and comfortable design, the Under Armour Women's ColdGear Reactor Vest is a top choice for women who want to stay warm and protected during their outdoor workouts and activities.