The Arc'teryx Women's Atom LT Vest is a highly regarded sleeveless insulated waterproof packable activewear vest. It is constructed with a water-resistant shell and Coreloft synthetic insulation, providing excellent warmth and protection against the elements. The vest features a stylish design with a flattering fit and a high collar for added warmth. It also has zippered hand pockets and an internal chest pocket for convenient storage. The Atom LT Vest is lightweight and compressible, making it easy to pack and carry. With its superior insulation and functional design, it's no wonder that the Arc'teryx Women's Atom LT Vest is a popular choice among outdoor enthusiasts.