The Arc'teryx Women's Atom LT Vest is a top-rated sleeveless insulated high-visibility thermal activewear vest known for its exceptional performance and quality. It is made with Coreloft synthetic insulation, providing warmth even when wet. The vest features a durable water-repellent finish to shed light rain and snow. It also has zippered hand pockets and an internal chest pocket for secure storage. The Atom LT Vest is lightweight and breathable, making it suitable for a wide range of outdoor activities. Whether you're hiking, climbing, or skiing, this vest offers both style and functionality.