Western Mountaineering Bison Stormshield 6'0" Left Zip

Whether you are travelling above the arctic circle, or above 8000 meters, every aspect of the Bison StormShield™ is designed to keep you warm, and alive, in the coldest environments on Earth. Double interlocking draft tubes, weatherproof draft collar and oversized, differential cut hood create combine with our patented V-Block baffles, 42 ounces of 850+ fill power down, to give the Bison a massive 10 inches of heat trapping loft all sealed in a StormShield™ weatherproof shell. The Bison StormShield™ is the bag you can count on to keep you warm when you need absolutely need it. Made in the USA.

Filled with 850+ Fill Power ethically-sourced premium goose down

V-Block side baffles provides phenomenal down control and improves insulation in colder temperatures

Weather-resistant StormShield shell protects against extreme wind and moisture, while maximizing inner breathability

Two Interlocking Draft Tubes seal the sleeping bag against cold wind and help retain inner temperature

Offset Insulated Double Draft Tubes.

Durable, abrasion-resistant footbox lining great for storing heavy boots & alpine equipment

StormShield-Lined insulated external hood ruff seals the bag out from freezing temperatures while retaining internal heat

Comes with ultralight stuff sack and breathable mesh storage bag

4 lbs. 6 oz. Total Weight

Shape Mummy (w/ full collar)

Temp Rating -40°F

Fill 850+ Power Goose Down

Color Magma

Country of Origin USA

Fabric StormShield

Loft 10 in

Inside Girth shdr/hip/foot 6'0" 64"/55"/39"

Fill Weight 6'0" 42oz

Total Weight 6'0" 69oz

Stuff Size 6'0" 11 x 22 XXL