A warm down vest - it&&';;s a winter necessity. Born from an alpine-proven design, refined to perform as a versatile standalone, the Thorium is the one you reach for before stepping out into the cold. The 750 fill-power Responsible Down Standard certified grey goose down delivers excellent warmth for its weight. Down Composite Mapping(TM) strategically places Coreloft(TM) synthetic insulation in areas prone to moisture, the bio-derived liner reduces petroleum use, and the light, durable Arato(TM) 30 nylon shell has a DWR treatment for water repellency. Features & Specs Technical features Moisture-resistant outer face fabric Breathable Lightweight Compressible and packable Wind resistant Collar configuration High collar adds warmth Construction Down Composite Mapping(TM) strategically places synthetic insulation in areas where moisture may buildup and down in areas for maximum warmth 750 fill down for premium warmth Down Contour Construction(TM) allows the down to form to the body for more efficient thermal performance Downproof 20D plant-based Arato(TM) liner is exceptionally lightweight and reduces petroleum use Design & Fit Regular fit provides freedom of movement with room for layers Garment Centre Back Length: Size S is 23"/58.5cm - Varies by size Fabric treatment FC0-DWR (Durable Water Repellent) finish repels moisture Hood configuration Helmet compatible Single pull adjuster does not restrict vision Adjustable, low profile, insulated StormHood(TM) Integrated features Includes stuff sack for compact transport Patterning Articulated patterning for unrestricted mobility Pocket configuration Two hand pockets with zippers Zippered internal security pocket Sustainability Padding - bluepass Material, recycled content RDS (Responsible Down Standard) - 100% of our down is certified to the RDS by IDFL (No.TE-99950273) Feather - This product contains feather not exceeding that allowable by law PFAS (Per- and polyfluoroalkyl substances) Compliant Lining - FC0 DWR Shell - FC0 DWR Zippers & Fly configuration Full front zip Size XXS, XS, S, M, L, XL, XXL Weight 290g / 10.2 oz Fit Regular Activity Rock/Boulder/Hike Model X000010547