Western Mountaineering Puma StormShield 6'0" Left Zip Lime Black
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Puma StormShield – Weather-Resistant Expedition Sleeping Bag
Built for the harshest environments on Earth, the Puma StormShield is a weather-resistant expedition sleeping bag designed for high-altitude objectives, deep winter expeditions, and extreme cold where failure is not an option. Rated to -25°F and protected by our StormShield™ shell, the Puma delivers serious warmth and dependable protection in punishing subzero conditions.
At the core of the Puma is 36 ounces of 850+ fill power ethically sourced goose down, providing unmatched loft and insulation while maintaining impressive compressibility for its warmth. The StormShield™ fabric is a lightweight, breathable microfiber that is windproof and water-resistant—offering critical protection when condensation, frost, or spindrift threaten to compromise down performance.
A full down-filled draft collar and insulated draft tube prevent heat loss along the zipper, while the contoured hood seals in warmth and minimizes dead air space. The Puma’s slightly oversized cut allows you to wear layers inside without compressing the insulation, making it a favorite among mountaineers and polar travelers who need maximum flexibility in hostile environments.
Despite its expedition-ready performance, the Puma weighs just 3 lb 7 oz, offering an exceptional warmth-to-weight ratio for a -25°F bag. It’s the ideal choice for Denali, the Alaska Range, Himalayan basecamps, or any mission where deep cold, wet weather, and high stakes converge.
Handmade in the USA with Western Mountaineering’s signature precision and premium materials, the Puma StormShield is built for those who go farther, higher, and colder than most—and need gear that won’t let them down.
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
Durable, abrasion-resistant footbox lining great for storing heavy boots & alpine equipment
Reverse Differential Hood keeps you insulated with a drawcord option for tightening down
Comes with ultralight stuff sack and breathable mesh storage bag
3 lbs. 10 oz. Total Weight
Shape Mummy (w/ full collar)
Temp Rating -25°F
Fill 850+ Power Goose Down
Color Neon
Country of Origin USA
Fabric StormShield
Loft 9.5" in
Inside Girth shdr/hip/foot 5'6" 62"/55"/39" 6'0" 64"/56"/39" 6'6" 66"/57"/39"
Fill Weight 5'6" 34 oz 6'0" 37 oz 6'6" 41.5 oz
Total Weight 5'6" 3 lb 9 oz 6'0" 3 lb 11 oz 6'6" 3 lb 14 oz
Stuff Size 5'6" 9"x18" L 6'0" 10"x20" XL 6'6" 10"x20" XL
Built for the harshest environments on Earth, the Puma StormShield is a weather-resistant expedition sleeping bag designed for high-altitude objectives, deep winter expeditions, and extreme cold where failure is not an option. Rated to -25°F and protected by our StormShield™ shell, the Puma delivers serious warmth and dependable protection in punishing subzero conditions.
At the core of the Puma is 36 ounces of 850+ fill power ethically sourced goose down, providing unmatched loft and insulation while maintaining impressive compressibility for its warmth. The StormShield™ fabric is a lightweight, breathable microfiber that is windproof and water-resistant—offering critical protection when condensation, frost, or spindrift threaten to compromise down performance.
A full down-filled draft collar and insulated draft tube prevent heat loss along the zipper, while the contoured hood seals in warmth and minimizes dead air space. The Puma’s slightly oversized cut allows you to wear layers inside without compressing the insulation, making it a favorite among mountaineers and polar travelers who need maximum flexibility in hostile environments.
Despite its expedition-ready performance, the Puma weighs just 3 lb 7 oz, offering an exceptional warmth-to-weight ratio for a -25°F bag. It’s the ideal choice for Denali, the Alaska Range, Himalayan basecamps, or any mission where deep cold, wet weather, and high stakes converge.
Handmade in the USA with Western Mountaineering’s signature precision and premium materials, the Puma StormShield is built for those who go farther, higher, and colder than most—and need gear that won’t let them down.
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
Durable, abrasion-resistant footbox lining great for storing heavy boots & alpine equipment
Reverse Differential Hood keeps you insulated with a drawcord option for tightening down
Comes with ultralight stuff sack and breathable mesh storage bag
3 lbs. 10 oz. Total Weight
Shape Mummy (w/ full collar)
Temp Rating -25°F
Fill 850+ Power Goose Down
Color Neon
Country of Origin USA
Fabric StormShield
Loft 9.5" in
Inside Girth shdr/hip/foot 5'6" 62"/55"/39" 6'0" 64"/56"/39" 6'6" 66"/57"/39"
Fill Weight 5'6" 34 oz 6'0" 37 oz 6'6" 41.5 oz
Total Weight 5'6" 3 lb 9 oz 6'0" 3 lb 11 oz 6'6" 3 lb 14 oz
Stuff Size 5'6" 9"x18" L 6'0" 10"x20" XL 6'6" 10"x20" XL