The Men's Arc'teryx Thorium Hooded Puffer Jacket is a warm, versatile, and standalone hoody built to deliver thermal performance in cold environments. It is packed with 750 fill-power Responsible Down Standard certified grey goose down for outstanding warmth-to-weight ratio. The jacket features Down Composite Mapping™, strategically placing Coreloft™ synthetic insulation in areas prone to moisture buildup and down in core areas for maximum warmth. The light, durable Arato™ 30 nylon shell has a DWR treatment to repel water, while the adjustable, insulated StormHood™ adds extra warmth and protection. With articulated patterning for unrestricted mobility and a regular fit designed for comfortable layering, the Thorium is ready for travel, commuting, hiking, and everyday cold-weather use.