The beginning, the end, and everything in between, Valandre's Expedition Odin 4 Down Sleeping Bag started with the fourth summit of K2 in 1979. That being said, you know you'll get top quality down that's practically heaven sent or should we say Asgard sent'. The 850 of the finest gray goose down preps the Odin to withstand temperatures as low as 4 degrees, and it means this bag packs down small to fit for season after season of adventures. Its nylon ripstop shell maximizes durability and minimizes weight, and the shell and the polyester ripstop lining have water resistant features that keep water away while you sleep soundly. A static drawcord cinches the Odin's hood over your forehead tightly to optimize isolation so warmth can't escape during cold fronts. Also trapping heat is the draft collar that compensates for different lengths needed to protect your shoulders, neck, and throat so you are toasty from head to toes. The quarter length zipper has an interlocking draft tube to fully seal out cold weather. The Odin's side raised compartments optimize side insulation, bringing the count to twenty seven compartments that maximize fill fixation and operation.