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Compare Best Winter Sleeping Bags head to head
Pick any two picks from this list and see specs, current price, pros, cons and reader ratings side by side.
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#1 on this list
Puma GWS -25°F
Western Mountaineering
The American benchmark. 850+ fill, continuous baffles, and a collar that seals like a gasket.
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- How we assessed it
- Specification researched
#2 on this list
Snowbunting EX 0
Feathered Friends
Seattle-built, 900+ fill, Pertex Endurance shell. The most efficient warmth-to-weight bag in a winter tent.
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Specs side by side
| Spec | Puma GWS -25°F | Snowbunting EX 0 |
|---|---|---|
| Temperature Rating | -25°F (-32°C) | — |
| Fill Power | 850+ Fill Goose Down | 900+ Goose Down |
| Shell Material | Gore Windstopper Fabric | — |
| Insulation Type | Premium Down | — |
| Baffle Construction | Continuous Baffles | — |
| Zipper Type | Full Length YKK | — |
| Manufacturer | — | Feathered Friends |
| Model | — | Snowbunting EX 0 |
| Shell Fabric | — | Pertex Endurance |
| Origin | — | Seattle, USA |
What our reviewers liked and didn't
Puma GWS -25°F
- Unmatched warmth for its weight and temperature rating
- Superior 850+ fill power goose down insulation
- Effective Gore Windstopper shell protects against wind and moisture
- Continuous baffles allow down redistribution for customizable warmth
- Excellent draft collar and tube seal in heat
- Exceptional long-term durability and craftsmanship
- High initial cost is a significant investment
- Overkill for anything but extreme cold conditions
- Bulky even when compressed, takes up substantial pack space
- Requires careful storage to maintain loft and longevity
Snowbunting EX 0
- Exceptional warmth-to-weight ratio for extreme cold
- Premium 900+ fill power goose down, ethically sourced
- Pertex Endurance shell offers excellent water resistance and breathability
- Hand-built quality ensures superior craftsmanship and durability
- Excellent loft and consistent insulation without cold spots
- High price point, a significant investment
- Specialized fit may feel restrictive to some sleepers
- Requires diligent care to maintain down integrity and loft
- Temperature rating may be overkill for milder winter conditions
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