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SIZE RATING LOFT SHOULDER GIRTH HIP GIRTH FOOT GIRTH
6'0" -40 F 10 in 64 in 55 in 39 in
6'6" -40 F 10 in 64 in 55 in 39 in

Western Mountaineering Bison GWS Sleeping Bag

Item# WESBISGWS

$1,064.95

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$1,064.95
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Description
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
Specifications
Shell fabric GORE WINDSTOPPER™ 830, Dryloft
Insulation type Down
Insulation material 850+ Fill Power Goose Down
Gender Unisex
Shape Mummy
Seasons 4
Stuff sack size 11 x 22 in (28 x 56 cm)
Temperature rating -40° F (-40° C)
Fill weight 2 lbs 10 oz (1191 g) - Regular
Weight 4 lbs 10 oz (2097 g) - Regular