Gear
Cumulus Alaska 1300
Value-focused deep-winter mountaineering
Expert reviewed
Topic summary
Value-focused deep-winter mountaineering
Key takeaways
- 700FP Polish duck down
- 1,300 g fill
- Pertex Quantum
- double H-baffles
- Remarkable cold-weather specification for the price, with serious down quantity and a proven baffle system.
Verification notes
Evidence: expert reviewed. Last verified July 16, 2026.
Editorial take
Cumulus Alaska 1300 is a cold-weather sleeping bag with an advertised -22°F rating and 700FP Polish duck down; 1,300 g fill; Pertex Quantum; double H-baffles. It is best suited to value-focused deep-winter mountaineering.
Not ideal for
- Heavier and bulkier than higher-fill-power premium bags
- import costs may apply.
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Verified specifications
- Key features
- 700FP Polish duck down
- 1,300 g fill
- Pertex Quantum
- double H-baffles
Warranty and repair information: contact Cumulus directly for the most current terms. Cumulus support
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Data sources & verification
- Manufacturer: Cumulus
- Last verified: 7/16/2026