How to Choose Sleeping Bags for Backpacking
Big Agnes Yock 0 Sleeping Bag - Men's
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Great for backpacking adventures, the Big Agnes Yock 0 sleeping bag features a traditional mummy shape and down insulation to keep your pack light and your nights warm.
Shop similar productsKey Details
Fill
600-fill-power DownTek
Temperature Rating (F)
-4 degrees (F)
- Traditional mummy shape, DownTek™ insulation and baffle construction provide efficient heat retention
- Contoured hood follows the shape of your head for a more comfortable fit; low-profile cordlock lets you uncinch the hood with one hand
- Breathable shell fabric features a water-repellent finish
- 2-way YKK #5 antisnag locking zipper with zipper garage offers a smooth, quick zip
- Liner loops let you attach a sleeping bag liner (sold separately) and help keep it in place
- Designed to zip together with right-zip bags (not included)
- No-draft oversize collar and no-draft zipper help seal out cold air
- Exterior loops are great for hang drying or storage
- Baffled construction
- 600-fill-power DownTek water-repellent down is PFC-free
- Works with any pad size or style (sold separately)
- Comes with mesh storage sack and nylon stuff sack
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 Big Agnes 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 |
|---|---|
| Tested Lower Limit | -4 degrees (F) - EN |
| Tested Comfort | 10 degrees (F) - EN |
| Temperature Rating (F) | -4 degrees (F) |
| Temperature Rating (C) | -18 degrees (C) |
| Shell | Ripstop nylon |
| Zipper Location | Left |
| Insulation Type | Down |
| Water-Resistant Down | Yes |
| Fill | 600-fill-power DownTek |
| Lining | Nylon taffeta |
| Sleeping Bag Shape | Mummy |
| Stuff Sack Size | 9 x 20 inches |
| Stuff Sack Volume | 20.9 liters |
| Gender | Men's |
