The Under Armour Women's ColdGear Reactor Vest is a popular choice for women looking for a sleeveless hooded thermal packable activewear vest. It is made from a blend of polyester and elastane, providing excellent warmth and flexibility. The vest features a full zip closure, a hood for added protection, and two zippered hand pockets. The ColdGear Reactor technology adapts to your activity level, providing the right amount of warmth and breathability. Whether you're running, hiking, or simply enjoying the outdoors, this vest will keep you comfortable and stylish.