The Arc'teryx Women's Atom LT Vest is a top-rated sleeveless waterproof activewear vest that offers exceptional warmth and versatility. Made from a blend of nylon and polyester, this vest features a durable water repellent finish to keep you dry in light rain or snow. It is insulated with Coreloft synthetic insulation, providing excellent warmth even when wet. The vest also has a slim fit and a stylish design, making it a popular choice for outdoor activities. With its high-quality construction and reliable performance, it's no surprise that customers rave about this vest on Amazon.