Gear
Therm-a-Rest Polar Ranger -20
Active winter campers who need ventilation and in-bag mobility
Expert reviewed
Topic summary
Active winter campers who need ventilation and in-bag mobility
Key takeaways
- 800-fill down
- arm openings
- snorkel hood
- Toe-asis foot warmer
- Unusually functional cold-weather features make it easier to manage moisture, tasks and temperature without leaving the bag.
Verification notes
Evidence: expert reviewed. Last verified July 16, 2026.
Editorial take
Therm-a-Rest Polar Ranger -20 is a cold-weather sleeping bag with an advertised -20°F rating and 800-fill down; arm openings; snorkel hood; Toe-asis foot warmer. It is best suited to active winter campers who need ventilation and in-bag mobility.
Not ideal for
- Specialized design and premium price
- openings add complexity.
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Verified specifications
- Key features
- 800-fill down
- arm openings
- snorkel hood
- Toe-asis foot warmer
Warranty and repair information: contact Therm-a-Rest directly for the most current terms. Therm-a-Rest support
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Data sources & verification
- Manufacturer: Therm-a-Rest
- Last verified: 7/16/2026