Details Built to handle a range of environments- cold ones- the Arc'teryx Thorium Hoody for Men delivers serious warmth. Packed with 750 fill-power Responsible Down Standard certified grey goose down, it offers outstanding thermal performance for its weight. Down Composite Mapping™ strategically places Coreloft™ synthetic insulation in areas prone to moisture, the light, durable Arato™ 30 nylon shell has a DWR treatment for water repellency, a bio-derived liner reduces petroleum use, and the insulated adjustable StormHood™ adds even more warmth. Material Arato™ 30 100% Nylon Arato™ 20 100% Nylon Lining with 60% bio-derived material and FC0 DWR Goose Down Insulation Coreloft™ 140 (140 g/m²) and 80 (80 g/m²) Insulation 80% recycled polyester Bluesign Approved Material Contains bio-derived material from 60% castor bean oil, yielding the same benefits as synthetic nylon while reducing reliance on fossil fuels Fit Regular Regular fit provides freedom of movement with room for layers Dual lower hem adjusters Adjustable, low profile, insulated StormHood™ Single pull adjuster does not restrict vision Articulated patterning for unrestricted mobility Details Warm, versatile, standalone hoody insulated with responsibly-sourced goose down Versatile down insulated mid layers that provide durable warmth Versatile high performance design for diverse activities and conditions The Thorium Hoody was previously the Thorium AR Hoody Compressible and packable High collar adds warmth Helmet compatible Includes stuff sack for compact transport Chest pocket with zip Two internal dump pockets Two hand pockets with zippers Two-way front zipper Specs Waterproofing FC0-DWR (Durable Water Repellent) finish repels moisture Moisture-resistant outer face fabric Breathability Wind resistant but breathable Insulation 750 Fill Grey Goose Down Highly efficient natural insulation that compacts well and offers excellent warmth to weight 750 fill down for premium warmth Meets the global standard for Responsible Down Standard (RDS) Down Composite Mapping™ strategically places synthetic insulation in areas where moisture may buildup and down in areas for maximum warmth Down Contour Construction™ allows the down to form to the body for more efficient thermal performance Downproof 20D plant-based Arato™ liner is exceptionally lightweight Weight Lightweight 517g / 1 lb 2.2 oz Arc'teryx Thorium Hoody Men's