How to Choose Sleeping Bags for Backpacking
Marmot CWM EQ -40 Sleeping Bag
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This Marmot CWM EQ bag is designed for extreme cold, from polar regions to high-altitude mountaineering in the Himalayas, with the highest quality 800-fill-power goose down and a waterproof shell.
Shop similar productsKey Details
Fill
800-fill goose down
Temperature Rating (F)
-40 degrees (F)
- Marmot MemBrain® ripstop nylon laminate shell is waterproof, breathable and downproof
- MemBrain technology reacts as the temperature inside your sleeping bag rises, increasing its breathability to keep you dry and comfortable
- Lofty, premium 800-fill-power goose down offers superb warmth for minimal weight; It's meticulously cleaned and processed for hypoallergenic qualities
- 9-baffle chest section provides maximum goose down control for warmth and durability
- 6-Baffle Hood envelops your head in warmth; Face Muff allows hood to be cinched snug without digging into your face
- No more midnight drawcord fumbling—smooth, flat upper cord and hard, round lower cord make hood adjustments easy
- Hood closure system stays closed without the use of rip-and-stick and also keeps the drawstring and zipper away from your face
- Spacious 11-baffle footbox allows down to loft fully; footbox is reinforced to handle extra abuse of boot liners and water bottle
- Down-filled draft collar increases warmth; hidden pocket in down-filled draft tube keep small items such as lip balm or your watch warm and accessible
- Zipper guards prevent zipper snags; locking, full-length zippers keep bag from opening in the night
- Comes with nylon stuff sack and a storage bag
Imported.
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. Backpacking bags are typically rated for temperature according to an independent testing protocol—currently International Organization for Standardization (ISO) 23537, though some older items followed European Norm (EN) 13537. 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. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
View all Marmot 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. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
| Best Use | Backpacking Mountaineering |
|---|---|
| Tested Lower Limit | Not applicable degrees (F) - EN |
| Tested Comfort | Not applicable degrees (F) - EN |
| Temperature Rating (F) | -40 degrees (F) |
| Temperature Rating (C) | -40 degrees (C) |
| Shell | Nylon |
| Insulation Type | Down |
| Fill | 800-fill goose down |
| Lining | Nylon |
| Sleeping Bag Shape | Mummy |
| Stuff Sack Size | 9.5 x 19 inches |
| Gender | Unisex |
