The Under Armour Women's ColdGear Reactor Vest is a high-performance sleeveless windproof vest designed for active women. It is made from lightweight and breathable materials, making it suitable for cold weather activities. The vest features ColdGear Reactor insulation, which adapts to your activity level for the right breathability and warmth. It also has a high collar and a full zip closure to keep the wind out. With its high-visibility color options, this vest is perfect for outdoor workouts or layering under a jacket. Stay warm and comfortable with this versatile and stylish vest.