The Under Armour Women's ColdGear Reactor Vest is a top-selling waterproof activewear vest that is perfect for cold weather activities. This vest is made from a water-resistant polyester fabric that also provides excellent insulation. It features a full zip closure and a stand-up collar for added warmth. The vest also has two zippered hand pockets and an internal chest pocket for convenient storage. With its innovative ColdGear Reactor technology, this vest adapts to your activity level to provide the right amount of warmth. It's no surprise that this vest is a favorite among outdoor enthusiasts.