The Under Armour Women's ColdGear Reactor Vest is a versatile sleeveless hooded vest designed for high-visibility and convertibility. It features UA Storm technology to repel water while maintaining breathability. The ColdGear Reactor insulation adapts to your activity level, providing the right amount of warmth. The vest has a zip-off hood and multiple pockets for storage. It is a popular choice for women who want a functional and stylish activewear vest.