The Alaska Range is nowhere to make a bad gear choice. The Western Mountaineering Bison GWS, with its 10 inches of heat trapping loft and Gore Windstopper™ shell, is what it takes to stay warm at the 14,000 ft. camp on Denali. Nearly impervious to the elements, while remaining lightweight, the Western Mountaineering's Bison remains the most sought-after expedition quality sleeping bag.
- Gore Windstopper™ shell reduces the threat of condensation and moisture while remaining breathable
- A slightly over-sized winter fit ensures comfort when extreme weather necessitates an extra layer or two
- The massive Reverse Differential Hood with an added external hood ruff seals in warmth
- A full 3-dimensional down filled collar full provides a protective seal from the bellows effect as you move about inside your bag
- Enjoy easy ventilation with a full-length #5 YKK Coil Zipper featuring two locking slider pulls for convenient access from inside or outside the bag
- Dacron® stiffening tape ensures smooth zipping and prevents zipper jams
- Robust double insulated draft tubes are offset and interlocking to ensure heat can't find it's way out through the zipper
- 10'' Loft provides luxurious warmth and compressibility
- 5¼'' spaced baffles allow maximum loft while preventing down migration
- V side block baffles ensure that insulation stays put and increases the number of down filled chambers to warm quicker
- DWR finish keeps moisture at bay even after multiple washings
- 64''/39'' Shoulder/Foot girth
- Stuff sack and large volume storage sack included
- Abrasion-resistant taffeta lines the inner foot box, allowing you to store gear or wear liners without compromising durability
- Proudly made in the USA
