Western Mountaineering Bison StormShield Sleeping Bag

Why We Like The Western Mountaineering Bison StormShield Sleeping Bag

When pushing for a serious, grit-testing summit, a good night´s sleep is one of many things that can set us up for success. The Western Mountaineering Bison StormShield Sleeping Bag helps us get those restorative Zs despite the mountain´s howling winds and icy temps. The featherweight construction with 850+ fill down can compress to stash away in a pack when making our way to the upper base camp. When we crawl inside this bag at the end of the day, the breathable GORE-TEX INFINIUM fabric shuts out condensation to protect the lofty insulation, ensuring no cold spots form, while the V-Block side baffles, interlocking draft tubes, and the hood´s integral ruff stop numbing temps from finding another way inside. Lined with an abrasion-resistant material, the footbox stashes our boots, so our toes can start the day off cozy.

Details

• Toasty sleeping bag for braving cold and snowy alpine missions
• Rated for -40°F temperatures to keep you cozy in harsh conditions
• GORE-TEX INFINIUM fabric is windproof and highly water resistant
• Lofty down insulation traps heat and is compressible for compact stashing
• Draft collar and offset tubes stop cold air from seeping inside
• Mummy shape provides efficient heat retention
• Full-length, two-way side zipper offers ventilation
• Item #WESZ03P

Tech Specs

Material

GORE-TEX INFINIUM

Insulation

850+ fill ethically-sourced goose down

Shape

mummy

Zipper

full-length, two-way

Max User Height

6ft 6in

Shoulder Circumference

64in

Hip Circumference

55in

Foot Circumference

39in

Bag Length

78.7in

Draft Tube

yes

Venting

two-way zipper

Fill Weight

45g

Degree

-40°F

Storage Sack

mesh

Stuff Sack

ultralight

Stuff Size

11 x 12in

Claimed Weight

4lb 1.6oz

Activity

mountaineering

Manufacturer Warranty

lifetime