When we're settling in for a frigid night at base camp, we're confident in the lofty 800-fill goose down that's packed into the -20F Inferno Sleeping Bag. This bag is equipped with the features needed to seal out below-zero temps, while the recycled outer fabric resists moisture from frost, condensation, and spills.
800-fill-power ProDown™ offers dependable, water-resistant insulation in cold overnight conditions
100% recycled main body material is light, durable and coated in aluminized XReflex™ for higher thermal retention
Waterproof and breathable Neovent Air helps protect the head and footbox
Fitted hood for more warmth and comfort; hood cinch-cord helps seal out the cold
Full draft collar and integrated draft overlap for comfort and to help prevent heat loss
Side half zipper lets you adjust for temperature
Shockcord attachments on the back help secure the bag to your sleeping pad (pad not included)
Anti-compression pads for better Clo values help keep you warmer
Vaulted footbox gives feet room to move
Compression sack and storage sack included
Best Use: Mountaineering
Temperature Rating (F): -20 degrees (F)
Temperature Rating (C): -29 degrees (C)
Weight: Regular - Right Zip: 3 lbs. 1 oz.
Shell: Shell top: recycled 15-denier nylon; shell bottom: recycled 15-denier nylon ripstop with Neovent Air
Zipper Location: Right
Insulation Type: Down
Water-Resistant Down: Yes
Fill: 800-fill-power ProDown down
Fill Weight: Regular - Right Zip: 2 lbs. 4 oz.
Lining: 30-denier nylon taffeta
Sleeping Bag Shape: Mummy
Fits Up To (in.): Regular - Right Zip: 72 inches
Shoulder Girth (in.): Regular - Right Zip: 64 inches
Hip Girth (in.): Regular - Right Zip: 60 inches
Stuff Sack Size: 10 x 18 inches
Stuff Sack Volume: 19 liters
Gender: Unisex
Sustainability: Contains recycled materials
Description
Stay Warm in Subzero Temperatures
When we're settling in for a frigid night at base camp, we're confident in the lofty 800-fill goose down that's packed into the -20F Inferno Sleeping Bag. This bag is equipped with the features needed to seal out below-zero temps, while the recycled outer fabric resists moisture from frost, condensation, and spills.
Details/Features
800-fill-power ProDown™ offers dependable, water-resistant insulation in cold overnight conditions
100% recycled main body material is light, durable and coated in aluminized XReflex™ for higher thermal retention
Waterproof and breathable Neovent Air helps protect the head and footbox
Fitted hood for more warmth and comfort; hood cinch-cord helps seal out the cold
Full draft collar and integrated draft overlap for comfort and to help prevent heat loss
Side half zipper lets you adjust for temperature
Shockcord attachments on the back help secure the bag to your sleeping pad (pad not included)
Anti-compression pads for better Clo values help keep you warmer
Vaulted footbox gives feet room to move
Compression sack and storage sack included
Specs
Best Use: Mountaineering
Temperature Rating (F): -20 degrees (F)
Temperature Rating (C): -29 degrees (C)
Weight: Regular - Right Zip: 3 lbs. 1 oz.
Shell: Shell top: recycled 15-denier nylon; shell bottom: recycled 15-denier nylon ripstop with Neovent Air
Zipper Location: Right
Insulation Type: Down
Water-Resistant Down: Yes
Fill: 800-fill-power ProDown down
Fill Weight: Regular - Right Zip: 2 lbs. 4 oz.
Lining: 30-denier nylon taffeta
Sleeping Bag Shape: Mummy
Fits Up To (in.): Regular - Right Zip: 72 inches
Shoulder Girth (in.): Regular - Right Zip: 64 inches
Hip Girth (in.): Regular - Right Zip: 60 inches
Stuff Sack Size: 10 x 18 inches
Stuff Sack Volume: 19 liters
Gender: Unisex
Sustainability: Contains recycled materials
Guide Pick
"The North Face Inferno -40 keeps you warm in the coldest temperatures. The center keeps you from waking up with “sleeping bag panic” when you can’t find the side zipper." - Abby Westling, RMI Expeditions Guide
Trust the experts
How Guide Pick™ Works
Step 1
The guides over at RMI collectively spend over 10,000+ days a year on the world's highest mountains, climbing hundreds of thousands of vertical feet. They put their gear and apparel through the wringer. This stuff is their work wear and they simply will not tolerate inferior gear.
Step 2
At the end of the climbing season, guides are given a survey to find out what gear they are using and why it is their favorite. We don’t often get complete agreement but we do get alignment and by looking at the data, a few clear winners rise to the top in each category.
Step 3
We take those winners, and stamp them with the Guide Pick™ logo on our site. We also compile this wonderful little document, which you can use to see top contenders, gear advice, Guide Quotes, and more.
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