Designed for mountaineering, this cold-weather mummy bag features water-repellent down insulation, a waterproof/breathable shell and a double zipper system for temperature regulation.
Fill
700-fill duck down
Temperature Rating (F)
-20 degrees (F)
- With a temperature rating of -20°F, this bag is suitable for 4-season use
- Unique double zipper system allows you to adjust comfort as needed—fully close both zippers to increase warmth, open inner zipper to decrease warmth
- Water-repellent 700-fill-power duck down offers superior loft and warmth
- REI double-protection design combines a polymer-coated down fill with waterproof/breathable ripstop nylon all around; shell also has a durable water repellent finish
- 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, draft collar and full-length draft tubes all work to keep warmth in
- Differentiated hood and neck drawcords simplify adjustments; antisnag zippers work smoothly
- Pass-through pocket has zippers on the outside and the inside to provide easy access to your stashed essentials
- The REI Expedition 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
| Best Use | Mountaineering |
|---|---|
| Tested Lower Limit | Unavailable |
| Tested Comfort | Unavailable |
| Temperature Rating (F) | -20 degrees (F) |
| Temperature Rating (C) | -29 degrees (C) |
| Shell | Ripstop nylon |
| Zipper Location | Left |
| Insulation Type | Down |
| Water-Resistant Down | Yes |
| Fill | 700-fill duck down |
| Lining | Nylon taffeta |
| Sleeping Bag Shape | Mummy |
| Stuff Sack Size | 9 x 20 inches |
| Stuff Sack Volume | 20 liters |
| Gender | Unisex |
| Sustainability | Down certified to the Responsible Down Standard (RDS) From a Climate Neutral Certified brand |