The Arc'teryx Women's Cerium LT Vest is a high-performance down vest that is designed to withstand extreme cold conditions. It is made with a lightweight and durable nylon shell and filled with 850-fill power down insulation, providing exceptional warmth without adding bulk. The vest features a high collar and a full-zip front closure for maximum protection against the cold. It also has two zippered hand pockets and an interior chest pocket for storing essentials. With its advanced insulation technology and superior craftsmanship, the Arc'teryx Women's Cerium LT Vest is a top choice for outdoor enthusiasts and mountaineers.