The Men's Thorium Hoody offers advanced warmth for diverse cold conditions. It features 750 fill-power RDS-certified grey goose down for superior insulation by weight. Coreloft™ synthetic insulation is strategically placed to maintain warmth even in damp areas. The durable Arato™ 30 nylon shell with DWR treatment resists water, while a bio-derived liner reduces petroleum use. An insulated, adjustable StormHood™ adds extra protection, making this hoody a reliable, high-performance option for serious cold-weather activities. I put it on and started sweating in 5 minutes, probably the warmest hoody ive evwr worn Much bulkier in the chest and shoulders than the previous gen Thorium AR hoody. Now it makes you look like the Michelin man. Not a fan of the new fit.