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 -32°C and protected by Western Mountaineering's StormShield™ shell, the Puma delivers serious warmth and dependable protection in punishing subzero conditions. At the core of the Puma is 1036g 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 1652g, offering an exceptional warmth-to-weight ratio for a -32°C 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.

Features

• 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