Home > Hiking & Backpacking > Sleeping Bags >

Western Mountaineering Bison GWS -40 (X-WIDE and X-LONG)
Western Mountaineering Bison GWS -40 (X-WIDE and X-LONG)

Our Price: $1,095.00


Please call for current stock of the Bison GWS! Also available in Long 6'6 ($1,200.00) & 7' (1,250.00)

We stock the Bison GWS (Gore WindStopper) in an exclusive Extra Wide (68 inch shoulder) version up to 7 feet long! This bag is SUPER WIDE and rated to -40 below zero F. This exclusive model is overstuffed with an additional 6 oz. of down. Now even the BIG guys can stay warm. We are the only shop in the US to stock this bag.

Western Mountaineering says: 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.


  • Shoulder (68"), Hip (57"), Foot (41")

  • Share your knowledge of this product. Be the first to write a review »