Yeti -40 Down Sleeping Bag

Save 35%

Zipper Side: Right
Length: Regular
Sale price$242.12 Regular price$372.50


Winter camping alert! The Yeti -40 is made for mountaineers who don't balk when it gets cold, they respond with better gear.

Our Yeti -40 has an extreme temperature rating of -40 degrees (C or F). When things get wild, as they often do in mountaineering, you can count on the Yeti 40 to help you survive the adventure. At more "reasonable" temps, like -20° C / -4° F, you'll have the warmth you need to sleep deep and recover from pushing to the point of exhaustion. (-40°F).


A DWR coating on a tough nylon shell provides protection from rain or the condensation that falls from the roof of the tent on a cold morning. Thick (4¼" / 11cm) rectangular baffles filled with 700+ fill power goose down deliver warmth in spades. In between camps the Yeti compresses to take up as little space as possible in your pack.

There's a draft tube along the inside of the zipper and around the shoulders to block the cold out plus a snorkel tube around the face. Full length zippers allow two mummy bags to be zipped together. The toe box is longer on top for a more natural foot position and toasty toes.


  • Temperature range: +10°F down to -40°F (-15°C down to -40°C)
  • 700+ FP goose down
  • Thick (4¼" / 11cm) rectangular baffles
  • Anatomical hood with draw-cord seal
  • Phosphorescent zipper pulls
  • Suspension loops for drying or long term storage
  • Draft tube for heat retention
  • Secret inner pocket
  • Tapered mummy shape

Tech Specs

  • Temperature range: +10°F down to -40°F (-15°C down to -40°C)
  • Dim. (Regular): 203 x 81cm (6' 8" x 2' 8")
  • Dim. (Long): 213 x 83cm (7' x 2' 9")
  • Weight (Regular): 2100 g / 74 oz. / 4.6 lbs.
  • Weight (Long): 2180 g / 77 oz. / 4.8 lbs.
  • Shell Material: 30D Nylon 30D
  • Lining: Nylon 37 g/m2
  • Insulation: 700+ FP Goose Down
  • Form: Mummy style

Customer Reviews

Based on 1 review
Jonathan Weeks
'-40 yeti bag

Insanely warm bag in a light weight package. Yet to be uncomfortable in this bag, 20° F nights its unzipped and im half way out. When compared to the competition this bag competes at half the price. Very high quality and durability.

Do note the temperature ranges are listed in Celsius and Fahrenheit sales rep and I confused the demo bag and the bag I bought with the two so I ended up with a bag beyond my needs.

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