The Under Armour Women's ColdGear Reactor Vest is a high-performance sleeveless windproof thermal vest. It is made with Under Armour's ColdGear Reactor technology, which adapts to your activity level to provide the right amount of warmth and breathability. The vest has a water-resistant outer shell to protect you from light rain and snow. It also has zippered hand pockets and an internal chest pocket for convenient storage. The ColdGear Reactor Vest has a slim fit and a longer back hem for added coverage. Stay warm and dry during your outdoor workouts with this innovative vest from Under Armour.