Western Mountaineering Bison GWS Sleeping Bag


Denali, Aconcagua, Himalaya…mountaineering in its extreme sense. These are places where mistakes cannot be made and so the Western Mountaineering Bison Super is most often chosen to serve. DryLoft™ 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 DryLoft™ collar seal in heat and security while howling winds surround your tent. The Bison’s massive hood is not only well filled but is completely made with DryLoft™ fabric and has a large integral hood ruff to seal your face from the elements. The Western Mountaineering Bison Super 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. If it were a subject in school, it would most certainly be Bisonology. Yes, yes it would.

All bags come with FREE overfill unless otherwise requested!




Western Mountaineering Bison Specs:

  • 5 1/4″ Spacing/V-Block Side Baffle
  • 64″/39″ Shoulder/Foot Girth
  • Full Down Collar
  • 10″ Loft, -40° F
  • 42 oz. Down Fill
  • 4 lbs. 10 oz. Total Weight

Additional information

Weight 8 oz

long-left-zip, long-right-zip, Regular/Left, Regular/Right


There are no reviews yet.

Be the first to review “Western Mountaineering Bison GWS Sleeping Bag”

Your email address will not be published. Required fields are marked *

We recently upgraded our site. Some information may be missing, so please bear with us and enjoy the new experience! Dismiss