The Under Armour Women's ColdGear Reactor Vest is a top-rated sleeveless hooded insulated waterproof activewear vest on Amazon. It is designed to provide warmth and protection in cold and wet conditions. The vest features Under Armour's ColdGear Reactor technology, which adapts to your activity level to provide the right amount of warmth and breathability. The waterproof fabric keeps you dry in rainy weather, while the hood provides added coverage and protection. The ColdGear Reactor Vest also has a stylish design with a flattering fit, making it a versatile piece that can be worn for outdoor activities or everyday wear. With its innovative technology and weather-resistant capabilities, the Under Armour Women's ColdGear Reactor Vest is a popular choice among women looking for a reliable and fashionable activewear vest.