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REI Joule Sleeping Bags - Video

A premium backpacking bag for wet conditions, the REI Joule Sleeping Bag features REI's double-protection design, which uses both water-repellent down and waterproof/breathable fabric panels.


  • With a European Norm (EN) comfort rating of 23°F, this bag is suitable for 3-season use
  • REI double-protection design combines a polymer-coated down fill with waterproof/breathable fabric at the hood, sides and footbox, the areas likely to touch a damp tent wall
  • Designed to fit a woman's body, this bag offers increased room at hips, decreased room at shoulders and extra insulation in critical heat-loss areas
  • Water-repellent 700-fill-power duck down offers superior loft and warmth
  • Ripstop nylon shell also features a durable water repellent finish to further protect the down fill
  • Performance fit keeps weight low and thermal efficiency high
  • REI in-the-round design puts vertical baffles in side walls to wrap you in warmth and create a better fit than bags that use only horizontal baffles
  • Contoured hood, insulated face muffler and full-length draft tube all work to keep warmth in
  • Differentiated hood and neck drawcords simplify adjustments
  • Most REI backpacking bags can be zipped to other REI backpacking bags; women's bags zip on the right, unisex on the left
  • The women's REI Joule Sleeping Bag includes a nylon stuff sack and a large cotton storage bag


Many sleeping bags are rated for temperature by an independent testing protocol, the European Norm (EN) 13537. Each bag gets two ratings: a Comfort rating and Lower Limit rating. The Comfort rating is the lowest temperature at which the bag will keep the average woman (or "cold sleeper") comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep an average man (or "warm sleeper") comfortable. Everyone's body and sleep comfort is different, so EN Ratings are merely a guideline to help you compare products.


Gear and clothing created with REI co-op members, the experts who work in our stores, and a wilderness spirit born in 1938.

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Best Use Backpacking
EN Lower Limit 11 degrees Fahrenheit
EN Comfort 23 degrees Fahrenheit
Temperature Rating (F) 23 degrees Fahrenheit
Temperature Rating (C) -5 degrees Celsius
Long Right
2 lbs. 4 oz.
Regular Right
2 lbs. 2 oz.
Shell Nylon taffeta
Zipper Location Right
Insulation Type Down
Water-Resistant Down Yes
Fill 700-fill duck down
Fill Weight
Long Right
21 ounces
Regular Right
20 ounces
Lining Ripstop nylon
Sleeping Bag Shape Mummy
Fits Up To (in.)
Long Right
72 inches
Regular Right
66 inches
Shoulder Girth (in.)
Long Right
58 inches
Regular Right
58 inches
Hip Girth (in.)
Long Right
58 inches
Regular Right
58 inches
Stuff Sack Size 8.25 x 18 inches
Stuff Sack Volume 15 liters
Compressed Volume
Long Right
6.8 liters
Regular Right
6 liters
Gender Women's
Two hikers wearing Flash Series packs and clothing stand atop a crag admire the view of mountain

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Member stories from their time on the trail influenced innovations in our new streamlined backpacking gear & clothing that balances light weight and high performance for a swift adventure.

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