The Fenrir is probably the most versatile down jacket you will ever own. Down Tek Nanotechnology treatment creates surface tension on the down cluster, so when molecules of moisture encounter Down Tek, the moisture is forced to collect into a sphere & roll off the down cluster rather than adhering to & soaking into it. This treatment adds no discernable weight & doesnt not effect the downs lofting capability. It is environmentally friendly & dramatically improves the wet performance of down. Down Tek absorbs 30% less water, dries 60% faster & retains significantly more loft when exposed to moisture, & unlike other treatments out there, it doesnt wash out. All this magic 850 fill power premium goose down is cocooned in a lightweight 30 Denier windproof, rip-stop nylon outer with DWR finish, allowing the down to fully loft & resulting in a highly weather resistant, warm jacket. Using an athletic cut & hybrid construction; not only does the Fenrir fit superbly reducing the amount of dead space in the jacket. It also has Neutron breathable synthetic insulation in key moisture areas such as, the cuff hems & collar. It also feature & elasticated hood, YKK front zip with glove compatible zip pulls & one hand operated hem draw cords. Athletic, anatomical cut with hybrid construction DOWN-TEK water repellent down insulation 850 Fill Power, premium grey goose down in a minimum 93/7 ratio NEUTRON™ breathable synthetic insulation in potential wet-out zones at cuffs, hem & collar Body-mapped down fill schedule Windproof, micro rip-stop nylon face fabric with DWR finish Elasticated hood with softened zip guard YKK® front zipper Hand warmer pockets with front facing insulation Corded, glove compatible zipper pulls One-handed, elastic hem drawcord operation Embroidered logo