The Arc'teryx Women's Atom LT Vest is a high-performance sleeveless waterproof activewear vest that is highly rated by customers. It is made with a lightweight and breathable fabric that provides warmth and weather protection. The vest features Coreloft synthetic insulation that retains warmth even when wet. It has zippered hand pockets and a stand-up collar for added functionality. This stylish and durable vest is suitable for a wide range of outdoor activities.