The Arcteryx Womens Cerium Vest is a lightweight stitch-through down Vest that uses the finest 850 fill power European white goose down, ensuring super lightweight warmth for those on the move. The Cerium offers superb mobility and and can be used as either a warm mid layer or as an outer layer in cooler conditions. This is the perfect choice for the ski tourer or alpine climber requiring warmth, and packability at a minimal weight. Down Composite mapping (DCM) is utilized in the Cerium Vest. DCM is where synthetic insulation is used instead of down in areas prone to moisture - the collar, chin, underarms and cuffs. These areas are also prone to down migration so the use of synthetic insulation eliminates this problem as it remains static within the Vest. Down is then used throughout the core and arms, where warmth is required the most. The outer fabric of Arato 15 is durable yet is still incredibly lightweight and also benefits from being DWR finished. The liner is a Recycled Arato Bio fabric that is light and comfortable. A vest is an ideal packable solution for extra emergency warmth that will keep your core warm without restricting movement. It features two zipped hand pockets and an internal security pocket. The Vest comes with its own stuff sack for easy rucksack transportation. Arcteryx Women's Cerium Vest Features 850 fill power European down Arato 15 outer fabric with a DWR finish Down Composite Mapping Front zip with chin guard and wind flap 2 zipped hand pockets 1 internal zipped security pocket Stuff Sack Adjustable hem drawcord Fit:Trim, hip length. Weight:180g Arcteryx Womens Cerium Vest