Responsible Down Standard certified fluffy 850 fill European white goose, recycled fabrics with dope dyed yarns (a process that uses considerably less resources than a traditional dye processe) the Arc'teryx Cerium Men’s Hoody lays down a respectably small footprint while packing a nice warming punch. The Cerium is a technical insulator that uses mapped construction to place Coreloft™ synthetic in areas prone to moisture for consistent warmth even under stress so you can wear this on even your most rugged excursions with confidence. A helmet compatible hood that doesn’t obstruct vision, articulated patterning for easy movement, and built to layer, this is sized as “fitted” for a tailored glide under winter and hiking shells. When the weather is wicked, or when you need a warm up, this toasty layering piece with premium fill will be there for you: it packs up at only 335 grams and into it’s own included stuff sack. It’s warmth that won’t weigh you down.