Puma GWS – Gore Infinium™ Expedition Mountaineering Sleeping Bag

For serious winter mountaineering, high-altitude expeditions, and Arctic conditions, the Puma GWS delivers the ultimate combination of warmth, weather protection, and durability. Whether you’re climbing frozen waterfalls, chasing untracked powder in remote alpine basins, or braving the Brooks Range in mid-winter, the Puma GWS is built to perform where other bags fail.

With 37 oz. of premium 850+ fill power ethically sourced goose down, this bag achieves 9 inches of loft and a -25°F (-32°C) temperature rating—making it one of the warmest mountaineering sleeping bags available. A 64″ shoulder girth provides ample room to layer insulated clothing, store essential gear, or accommodate larger body types without compressing loft.

The Gore Infinium™ shell offers exceptional water resistance, windproof protection, and breathability, while critical warmth-sealing features like the Reverse Differential Hood, full down-filled collar, and dual interlocking draft tubes are completely constructed from Infinium™ fabric for maximum cold-weather defense. The footbox is reinforced with 2.4 oz. fabric to protect against abrasion from stowed gear.

At just 3 lbs 15 oz (1,780 g), the Puma GWS packs expedition-grade warmth into a manageable weight, making it ideal for mountaineers, ice climbers, ski tourers, and polar explorers who demand reliable insulation in the harshest environments on Earth.

Features

Explanation

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 Gore Infinium 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. 12 oz. Total Weight

Specifications

• US
• Metric

Shape	Mummy (w/ full collar)
Temp Rating	-25°F
Fill	850+ Power Goose Down
Color	Royal Blue/Black
Country of Origin	USA
Fabric	Gore Windstopper
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" 40 oz
Total Weight	5'6" 3 lb 9 oz 6'0" 3 lb 12 oz 6'6" 3 lb 15 oz
Stuff Size	5'6" 9"x18" L 6'0" 10"x20" XL 6'6" 10"x20" XL

Shape	Mummy (w/ full collar)
Temp Rating	-32°C
Fill	850+ Power Goose Down
Color	Royal Blue/Black
Country of Origin	USA
Fabric	Gore Windstopper
Loft	24 cm
Inside Girth shdr/hip/foot	165cm 157/140/99 cm 180cm 163/142/99 cm 200cm 168/145/99 cm
Fill Weight	165cm 965 g 180cm 1050 g 200cm 1135 g
Total Weight	165cm 1615 g 180cm 1700 g 200cm 1785 g
Stuff Size	165cm 23x46 cm L 180cm 25x50 cm XL 200cm 25x50 cm XL