The Under Armour Women's ColdGear Reactor Vest is a top-selling sleeveless insulated waterproof packable activewear vest for women. It is made with a lightweight and breathable polyester shell and filled with ColdGear Reactor insulation, which adapts to your activity level for the right breathability and warmth. The vest features a water-resistant finish, keeping you dry in light rain or snow. It also has a packable design, allowing you to easily compress and store it in your backpack or suitcase. The Under Armour Women's ColdGear Reactor Vest is available in various colors and sizes, ensuring a perfect fit for every woman. Whether you're running, hiking, or doing outdoor workouts, this vest will keep you comfortable and protected.