The Under Armour Women's ColdGear Reactor Vest is a popular choice among women looking for a sleeveless insulated waterproof windproof activewear vest. It is made with a durable and water-resistant polyester shell and filled with ColdGear Reactor insulation, which adapts to your activity level for the right breathability and warmth. The vest features Under Armour's innovative design, which includes a lightweight and stretchy construction for maximum mobility. It also has a windproof and water-resistant finish, ensuring that you stay protected from the elements. The Under Armour Women's ColdGear Reactor Vest is a reliable and high-performing option for those looking for a versatile activewear vest.