Western Mountaineering - Puma StormShield (-25°F / -32°C)

THIS PRODUCT IS AVAILABLE FOR PURCHASE WHEN OUT OF STOCK

Some Western Mountaineering items must be custom ordered once an online order has been placed. Typically we will be able to ship your item to you within 3-4 weeks. If the item is in stock it will ship immediately.

If the Western Mountaineering product that you're interested in is not available on our website, please send an email to support@geartrade.ca for all custom orders.

Puma StormShield – Weather-Resistant Expedition Sleeping Bag (-25°F / -32°C WM Temp Rating )

The WM Temperature rating is a goal post for the lowest temperatures you realistically expect to encounter, not as a comfort guarantee for every situation. Choosing a bag rated about 5-10°F (3-5°C) colder than the lowest temperature you anticipate will provide a comfortable margin. The Extreme Temperature Rating is based on the EN/ISO testing protocol, and is the temperature at which an adult female can survive for 6 hours without hypothermia. It is NOT a usable comfort rating. 

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.

Please note: The Great Divide Trail discount does not apply to this item.