The Arc'teryx Women's Atom LT Vest is a popular choice for women seeking a lightweight and breathable activewear vest. It is insulated with Coreloft synthetic insulation, which provides warmth even when wet. The vest features a slim fit and a low-profile collar for easy layering. It also has zippered hand pockets and an internal chest pocket for storing small essentials. Whether you're climbing, hiking, or engaging in other outdoor activities, this vest will keep you comfortable and protected.