Design and Details

• 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. 10 oz.