Western Mountaineering
BISON -40ºF

The BISON will keep you toasty warm whether you are headed for Denali, Everest or Mt Vinson. Count on 850 fill power Prime Northern Goose Down, tightly spaced (5 1/4") baffles and special V-Block Side Baffles for optimum loft and down control. Revel in the details from the comfort of your personal heat machine - reverse differential cut hood with down filled ruff, huge interlocking double draft tubes and massive down filled collar. Niceties include no snag zipper tape and mitten friendly double pull zipper tabs.
Made in California.

length / dims / fill wt / stuffed
6'0" / 64-55-39" / 42oz / 11" x 22"
6'6" / 64-55-39" / 45oz / 11" x 22"

temp. rating: -40 F
loft: 10"
wt: 4 lbs 10 oz / 4 lbs 13 oz
price: discontinued