Therm-a-Rest Polar Ranger -20F/-30C Down Sleeping Bag
$789.95
Description
A winter sleep system starts with the comfort rating, not the number in the bag name. Polar Ranger combines 800-fill hydrophobic down, a synthetic-insulated snorkel hood and zippered arm vents for cold camps where managing loft and exhaled moisture matters. Its EN comfort rating is -4°F, while -20°F is the lower-limit rating. Neither is a personal warmth guarantee: insulation beneath you, shelter, clothing, fatigue and weather still matter.
Specifications
Polar Ranger -20F/-30C Down Sleeping Bag Regular specs
- Size: R
- Color: Flame
- Weight (g): 1477
- Length (in): 81
- Width (in): 32
- Height (in): 6.5
- Materials: Nylon, Down Fill
- Fits user height: 72 in (183 cm)
Included: Therm-a-Rest Polar Ranger -20F/-30C Down Sleeping Bag, Regular
- Compression Sack
- Storage Sack
Polar Ranger -20F/-30C Down Sleeping Bag Long specs
- Size: L
- Color: Flame
- Weight (g): 1559
- Length (in): 86
- Width (in): 34
- Height (in): 6.5
- Materials: Nylon, Down Fill
- Fits user height: 78 in (198 cm)
Included: Therm-a-Rest Polar Ranger -20F/-30C Down Sleeping Bag, Long
- Compression Sack
- Storage Sack
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Buying guide
Questions
Does -20°F mean comfortable sleep at -20°F?
No. The EN comfort rating is -4°F (-20°C); the EN lower limit is -20°F (-30°C). Choose around expected conditions and your own cold tolerance, with an appropriately insulated pad.
What changes between Regular and Long Polar Ranger bags?
Regular fits users up to 72 in (183 cm); Long fits up to 78 in (198 cm). Listed weights are 3 lb 4 oz and 3 lb 7 oz respectively.
Does the current Polar Ranger include pad-attachment straps?
No. Therm-a-Rest states that models from January 2026 no longer include SynergyLink Connector straps. Compression and storage sacks are included.
Why does the snorkel hood use synthetic insulation?
The snorkel routes exhaled moisture away from the down-filled bag. Its condensation-resistant synthetic insulation and magnetic closure help manage moisture around the breathing opening. Keep an unobstructed breathing path.