How to Choose Sleeping Bags for Backpacking
Anacortes
Big Agnes Greystone 30 Sleeping Bag
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It's ideal for backpacking but versatile enough for couch surfing. This Big Agnes sleeping bag is insulated with DownTek™ down. It uses baffle construction for efficient heat distribution.
Shop similar productsKey Details
Fill
600-fill-power DownTek down
Temperature Rating (F)
30 degrees (F)
- Traditional down mummy bag delivers technical, lightweight performance to excel on and off the trail with high thermal value, compressibility and comfort wherever you go
- Contoured hood follows the shape of your head for a more comfortable fit
- Oversize interior anti-draft collar
- Low-profile cordlock lets you uncinch the hood with one hand
- Insulated tube along upper hood opening seals out drafts when cinched
- Antisnag zipper for a smooth, quick zip
- 65 in. (165 cm) YKK #5 antisnag locking zipper
- 2-way zipper and zipper garage
- Liner loops (liner not included)
- Mate together left and right zip bags
- No-draft collar and no-draft zipper
- Exterior loops for hang-drying or storage
- Storage sack and stuff sack included
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 | 27 degrees (F) - ISO |
| Tested Comfort | 37 degrees (F) - ISO |
| Temperature Rating (F) | 30 degrees (F) |
| Temperature Rating (C) | -1 degrees (C) |
| Shell | GRS-certified recycled 20-denier 400T polyester ripstop with PFC-free water-repellent finish |
| Zipper Location | Left |
| Insulation Type | Down |
| Water-Resistant Down | Yes |
| Fill | 600-fill-power DownTek down |
| Sleeping Capacity | 1-person |
| Lining | GRS-certified recycled 20-denier 380T polyester taffeta with PFC-free water-repellent finish |
| Sleeping Bag Shape | Mummy |
| Stuff Sack Size | 8 x 17.5 inches |
| Stuff Sack Volume | 14.4 liters |
| Gender | Unisex |
| Sustainability | Down certified to the Responsible Down Standard (RDS) Contains recycled materials |
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