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. 10 oz.
The 6’6″ Bison GWS Expedition -40deg. F. by WESTERN MOUNTAINEERING
You will know when you need the Bison and its life sustaining performance.
Used Sale Return Policy
Inspection Period
We allow a 3 day inspection period on all USED sale items. If, for any reason, you want to return the item within those 3 days, simply contact us to request a return for a refund (3% restocking fee MAY apply. See below for details). By default, we don't allow returns after the 3-day inspection window. Please keep this in mind when you place an order, and if you need us to delay arrival so that you're better positioned to test the item within three days of arrival, we'll be glad to work with you.
Restocking Fee
After the 3-day inspection window has passed, a restocking fee will be applied and will consider the number of days you've had the item, in tandem with prevailing market rental rates.
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