Western Mountaineering Bison -40 F GWS Sleeping Bag

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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 their commitment to innovation and quality. This life saving bundle weighs in at a scant 4 lb. 10 oz.

• Waterproof breathable shell covering by W.L. Gore
• Full Gore Windstopper down filled Super Collar
• Two Interlocking oversized down draft tubes
• Filled with 42 oz. of down.
• 10 inches of loft, good to -40F
• Stiffening tape along zippers to prevent snags
• V-Block Side Baffles

• Material: [Shell] Gore WindStopper; [Lining] microfiber
• Insulation: 850+-Fill down
• Shape: Mummy
• Draft Collar: Yes
• Max User Height: [Reg] 6ft (183cm); [Long] 6ft 6in (198cm)
• Shoulder / Hip / Foot Circumference: [Reg & Long] 64 / 55 / 39in ( 163 / 140 / 99cm)
• Stuff Size: 11 x 22in (28 x 56cm)
• Stuff or Storage Sack: Both
• Degree: -40F (-40C)
• Weight: [Reg] 4lb 10oz (1644g); [Long] 4lb 13oz (1729g)
• Manufacturer Warranty: Lifetime
• Country of Origin: United States

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