Warm, versatile, standalone hoody insulated with responsibly-sourced goose down. *The Thorium Hoody was previously the Thorium AR Hoody.A proven hoody for cold, dry conditions, the Thorium delivers serious warmth and handles a wide range of environments. Packed with 750 fill-power Responsible Down Standard certified grey goose down, it offers outstanding thermal performance for its weight. Down Composite Mapping(TM) strategically places Coreloft(TM) synthetic insulation in areas prone to moisture. The light, durable Arato(TM) 30 nylon shell has a DWR treatment for water repellency, the liner 's bio-derived material reduces petroleum use, and the insulated adjustable hood fits over a helmet.Size and fit tips: The Thorium Hoody has a roomier fit in the body and a longer length than its predecessor, the Thorium AR.ThoriumVersatile down insulated mid layers that provide durable warmth. Light by construction.EverydayTechnical outdoor functionality, comfort and durability brought to everyday designs.Down InsulationHighly efficient natural insulation that compacts well and offers excellent warmth to weight.