This is the Bison GWS sleeping bag made by Western Mountaineering. It’s the bag climbers take on seriously cold and high summits and this one was bought in 2014 for Aconcagua. It has never actually been used for a climb. It was taken on a weekend trip as a test run but looks and smells brand new. No rips, holes or stuck zippers. Take a look at the specs below and note that this is the extra long 6’6 version and it is also double stuffed in the toe box. The sleeping bag has been stored lying flat inside my house without being compressed. The stuff sac that this bag came in has been misplaced and is not included. Inside Shoulder Girth: 64. Inside Hip Girth: 55. Inside Foot Girth: 39. Fill Weight: 45 oz. Total Weight: 4lb 13oz. Stuff Size: 11″x22″. Stuff Sac Size: XXL. Website Description (They describe the 6 version so this bag weighs slightly more as detailed in the specs above). Denali, Aconcagua, Himalaya mountaineering in its extreme sense. These are places where mistakes cannot be made and so the Bison is most often chosen to serve. Gore Windstopper fabric makes this bag impervious to the elements while remaining lightweight and very compressible. Crammed with 42 ounces of 850+ fill power down this bag has 10 abundant inches of heat trapping loft. Huge V-Block Side Baffles and horizontal baffles across your chest keep the down fill in place. Double Interlocking Draft Tubes and a down filled Gore Windstopper collar seal in heat and security while howling winds surround your tent. The massive hood is not only well filled but is completely made with Gore Windstopper fabric and has a large integral hood ruff to seal your face from the elements. The Bison is the crowning glory of Western Mountaineering and demonstrates our commitment to innovation and quality. This life saving bundle weighs in at a scant 4 lb. The item “Western Mountaineering Sleeping Bag Bison GWS Extra Long Goose Down -40F” is in sale since Tuesday, August 16, 2016. This item is in the category “Sporting Goods\Outdoor Sports\Camping & Hiking\Outdoor Sleeping Gear\Sleeping Bags”. The seller is “missbettyshop2015″ and is located in Missoula, Montana. This item can be shipped to United States, to Canada, to United Kingdom, DK, RO, SK, BG, CZ, FI, HU, LV, LT, MT, EE, to Australia, GR, PT, CY, SI, to Japan, to China, SE, KR, ID, to Taiwan, TH, to Belgium, to France, to Hong Kong, to Ireland, to Netherlands, PL, to Spain, to Italy, to Germany, to Austria, RU, IL, to Mexico, to New Zealand, SG, to Switzerland, NO, SA, UA, AE, QA, KW, BH, HR, MY, CL, CO, CR, PA, TT, GT, HN, JM.