The Under Armour Women's ColdGear Reactor Vest is a top choice for women who want a high-performance activewear vest. It is made from a blend of polyester and elastane, providing a comfortable and stretchy fit. The vest features ColdGear Reactor technology, which adapts to your activity level to provide the right amount of warmth and breathability. It has a quilted pattern that adds a stylish touch to your outfit. The vest also has a full zip closure and a stand-up collar to keep you protected from the cold. Whether you're going for a run, hitting the gym, or engaging in outdoor activities, this vest will keep you warm and comfortable.