Western Mountaineering - Bison GWS
Like all of Western Mountaineering's bags, the Bison GWS is made by hand in San Jose, California. Their down is sourced from free-range mother geese who are never live-plucked or force-fed.
International Restrictions Apply
Technical specifications & features
|Weight||Reg: 4 lbs 10 oz / Long: 4 lbs 13 oz|
|Gender||Men's & Unisex|
|Temp Rating º F||-40º F|
|Temp Rating º C||-40° C|
|Seasonal Usage||Four Season|
|Insulation||850+ Fill Down|
|Fill Weight||Reg: 42 oz / Long: 45 oz|
|Bag Shell Material||GORE® Windstopper™ 830 Fabric (GWS): windproof, virtually waterproof, and breathable|
|Bag Length||Reg: 6 ft / Long: 6 ft 6 in|
|Bag Stuff Size||11 x 22 in|
|Bag Loft||10 inches|
|Circumference at Chest||Reg / Long: 64 in|
|Circumference at Hips||Reg / Long: 55 in|
|Circumference at Foot||Reg / Long: 39 in|
|Other Features||Full GWS down-filled Super Collar completely surrounds your neck for maximum heat retention
Two interlocking GWS oversized down draft tubes mean zero cold spots along the zipper
Footbox made of abrasion-resistant taffeta, a more durable fabric woven with heavier yarns so the inside of your bag is protected when you store gear or boot liners at the foot of your bag
Stiffening tape along zipper to prevent snags
V-Block Side Baffles keep the loft where it belongs
Insulated External Hood Ruff
Questions & Answers
Thank you for your question.
While Western bags are not EN tested, we have found their ratings to be extremely conservative when compared to other brand's bags, and are quite accurate for the majority of users. Their provided temperature rating most closely associates somewhere between the comfort and limit ratings for EN standards.
Please let me know if you have any further questions or concerns.
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