The women's REI Co-op Joule 3-season mummy bag offers double protection—water-repellent down and waterproof/breathable fabric panels—with a fitted shape that's great in wet conditions.
Fill
700-fill-power duck down (RDS certified and bluesign® approved)
Temperature Rating (F)
21 degrees (F)
- REI double-protection design combines a polymer-coated down fill with waterproof/breathable fabric at the hood, sides and footbox—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—and is certified to the Responsible Down Standard (RDS) and bluesign® approved
- Ripstop nylon shell also uses a durable water repellent (DWR) 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 the sidewalls 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
- Regular Wide size has a relaxed cut that offers more room to adjust your sleep position; Regular and Long sizes have a fitted shape for superior warmth to weight ratio
- The women's REI Joule sleeping bag includes a nylon stuff sack and a large cotton storage bag
- REI is Climate Neutral Certified; as we work to actively reduce our footprint, we measure annual carbon emissions and purchase an equivalent amount of verified carbon credits
- Made in a Fair Trade Certified™ factory
- Contains materials that meet the bluesign® criteria
Temperature ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth, since many different factors contribute to your comfort while you sleep. Our backpacking bags are rated for temperature according to an independent testing protocol: International Organization for Standardization (ISO) 23537. Testing is based on a person wearing one base layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38.
Each bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. For REI Co-op brand nongendered sleeping bags, we provide an overall temperature rating that falls between the Comfort and Lower Limit ratings.
View all REI Co-op Backpacking Sleeping BagsEach bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. For REI Co-op brand nongendered sleeping bags, we provide an overall temperature rating that falls between the Comfort and Lower Limit ratings.
| Best Use | Backpacking |
|---|---|
| Tested Lower Limit | 9 degrees (F) - EN |
| Tested Comfort | 21 degrees (F) - EN |
| Temperature Rating (F) | 21 degrees (F) |
| Temperature Rating (C) | -6 degrees (C) |
| Shell | 20-denier ripstop nylon |
| Zipper Location | Right |
| Insulation Type | Down |
| Water-Resistant Down | Yes |
| Fill | 700-fill-power duck down (RDS certified and bluesign® approved) |
| Fill Weight | 18 ounces |
| Lining | 20-denier nylon taffeta |
| Sleeping Bag Shape | Mummy |
| Compressed Volume | Unavailable |
| Gender | Women's |
| Sustainability | Down certified to the Responsible Down Standard (RDS) Contains materials that meet the bluesign® criteria Fair Trade Certified™ factory From a Climate Neutral Certified brand |