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Item # TAR9F204M

Therm-a-Rest Polar Ranger -20 Degree Sleeping Bag

Purchase Polar Ranger -20 Degree
Starting At: $789.95

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Built for extreme cold and challenging conditions, the award-winning Therm-a-Rest Polar Ranger -20 Degree sleeping bag. utilizes premium materials and cutting edge design features and technology to keep you warm and protected and does so at less than 3.5 pounds!


Extreme cold and challenging conditions make demands that not just any sleeping bag can address. Luckily, the award-winning Therm-a-Rest Polar Ranger -20 Degree isn't just any sleeping bag. It utilizes premium materials and cutting edge design features and technology to keep you warm and protected and, amazingly, does so at less than 3.5 pounds!

The bag is insulated with 800 fill Nikwax Hydrophobic Down. This specially treated down absorbs 90% less water and dries 3 times faster if it does become wet than traditional untreated down insulation. It's also manufactured without using dangerous PFCs. Recycled nylon ripstop shell fabric and a DWR treatment further protect against the elements.

The bag's mummy shape also enhances overall thermal efficiency while helping to keep weight to a minimum. An ingenious Snorkel Hood enables you to pull warmth close while still breathing freely and giving your exhaled breath a way to escape instead of leading to condensation and wetting out. Integrated side vents allow you to customize temperature and also give you use of your arms without having to exit the bag. Overlapping internal draft tubes make sure that cold air doesn't find its way in when you've pulled your arms back into the bag.

Other features include snag-free zippers, a tilted comfort-enhancing toebox with a "Toe-asis" pocket to stow a heat-producing hand/foot warmer (warmer sold separately), an insulated draft collar and overstuffed draft tubes, an interior stash pocket, and integrated SynergyLink Connectors that secure the bag to your sleeping pad (pad sold separately) to keep you settled in place throughout the night and maximize the efficiency of your sleep system.

The Therm-a-Rest Polar Ranger -20 Degree sleeping bag is available in your choice of Regular (fits up to 6' 0") and Long (fits to 6' 6") lengths. A stuff sack and storage sack are included.

  • GRS-certified 100% recycled shell and liner fabrics are eco-friendly while being lightweight, soft, and durable
  • 800-Fill Nikwax Hydrophobic Down is PFC-free and absorbs 90% less water and dries 3x faster than untreated down
  • The insulation's Responsible Down Standard Certification ensures the waterfowl in the down supply chain are treated humanely
  • Snorkel Hood designed to allow for easy breathing and to ventilated exhaled moisture to preserve loft; magnetic closure keeps cross-drafts at bay and eases entry/exit
  • Side vents allow for external arm use and customizable temperature control; overlapping draft tubes prevent cold spots when closed
  • Ultra-lightweight SynergyLink Connector straps create a secure bag-to-sleeping pad connection (pad sold separately) that optimizes the comfort and thermal efficiency of your entire sleep system
  • YKK Anti-Snag zipper prevents accidental tears and eases entries and exits
  • Toe-asis pocket provides a place to utilize a foot warmer for additional heat (foot warmer not included)
  • Cinchable draft collar
  • Overstuffed draft tubes
  • Interior stash pocket
  • External quilt loops
  • Compression and storage sacks included

Technical Specs

Best Use
Mountaineering, Backpacking
En Comfort Rating
-4 Degrees F
En Lower Limit Rating
-20 Degrees F
Fill Material
Nikwax Hydrophobic Goose Down RDS
Fits To Girth
Regular: 64"
Long: 68"
Fits To Length
Regular: 72"
Long: 78"
Temperature Rating
-20 Degrees F
Insulation Type
Item Weight
Regular: 3 lb 4 oz
Long: 3 lb 7 oz
Stuff Sack and Storage Sack Included
Limited Lifetime
Packed Size
8.5" x 10"
Shell Material
100% recycled nylon ripstop w/ DWR
Liner Material
100% recycled nylon ripstop

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