Gear
The North Face Inferno -40
Technical mountaineering and severe winter camps
Expert reviewed
Topic summary
Technical mountaineering and severe winter camps
Key takeaways
- 800-fill down
- expedition mummy shape
- water-resistant shell zones
- Strong warmth-to-price performance for an expedition bag, with a proven shape and broad brand support.
Verification notes
Evidence: expert reviewed. Last verified July 16, 2026.
Editorial take
The North Face Inferno -40 is a cold-weather sleeping bag with an advertised -40°F rating and 800-fill down; expedition mummy shape; water-resistant shell zones. It is best suited to technical mountaineering and severe winter camps.
Not ideal for
- Availability can be seasonal, and fit is more technical than roomy.
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Verified specifications
- Key features
- 800-fill down
- expedition mummy shape
- water-resistant shell zones
Warranty and repair information: contact The North Face directly for the most current terms. The North Face support
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Data sources & verification
- Manufacturer: The North Face
- Last verified: 7/16/2026