I’m the original owner. This and the Bison were never used due to an injury I sustained. Interlocking Gore WindstopperT Draft Tubes. To some people winter mountaineering is just a pastime. Be it searching for an uncut bowl to tele, a frozen waterfall to climb or a simple visit to the Brooks Range, the Puma Gore WindstopperT has been there, done that! This sizable bag is lofted with down and roomy to boot! 37 ounces of 850+ fill power down lofts this bag to a full 9? A shoulder girth of 64? Provides room to layer, store clothing or fit to big folk. The inside foot section is sewn with a 2.4 oz. Fabric to protect the bag while stowing gear. And the Reverse Differential Hood is roomy, down filled and warm, and totally made with Gore WindstopperT. The full down filled collar and both Interlocking Draft Tubes are also completely made with Gore WindstopperT fabric. No place to cut costs! Few continents require anything warmer than our Puma Gore WindstopperT! Inside Girth shdr/hip/foot (in). Mummy (w/ full collar). 3 lb 9 oz. 3 lb 12 oz. 3 lb 15 oz. Inside Girth shdr/hip/foot (cm).