The Under Armour Women's ColdGear Reactor Vest is a high-performance sleeveless hooded activewear vest. It is designed to keep you warm and comfortable during cold weather activities. The vest features UA ColdGear Reactor technology, which adapts to your body temperature and provides optimal insulation. It also has a hood for added protection, zippered hand pockets for storage, and a lightweight design for ease of movement. Whether you're going for a run or hitting the slopes, this vest is a top choice for active women.