The Arc&';teryx Cerium Vest - Men&';s delivers exceptional warmth in an ultralight, minimalist design. Built for backcountry efficiency, it packs down easily and provides instant core insulation whether worn as a midlayer in cold, dry conditions or as a standalone layer during breaks or at camp. Premium 850-fill responsibly sourced down offers superior warmth-to-weight performance, while strategic Coreloft synthetic insulation reinforces moisture-prone areas for reliable comfort. Finished with a bio-derived liner and a recycled 15D Arato nylon shell, the Cerium Vest balances durability, sustainability, and high performance. A compact stuff sack is included for easy packability. Features: 850-Fill Responsibly Sourced Down: Exceptional warmth with minimal weight. Coreloft Synthetic Insulation: Added performance in areas exposed to moisture. Ultralight & Packable: Compresses easily into the included stuff sack for on-the-go use. Recycled 15D Arato Nylon Shell: Lightweight, durable protection with reduced environmental impact. Bio-Derived Liner: Helps cut down on petroleum-based materials. Versatile Layering: Ideal as a midlayer in cold conditions or a standalone piece during rest periods.