How to Choose Sleeping Bags for Backpacking
Big Agnes Spike Lake 15 Sleeping Bag - Men's
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With a traditional mummy shape, DownTek™ down insulation and baffle construction, the Big Agnes Spike Lake 15 sleeping bag provides warmth and minimal weight so you can travel fast and light.
Shop similar productsKey Details
Fill
600-fil-powerl DownTek down
Temperature Rating (F)
13 degrees (F)
- Traditional mummy shape, DownTek™ insulation and baffle construction provide efficient heat retention
- 600-fill-power DownTek water-repellent down is PFC-free
- Contoured hood follows the shape of your head for a comfortable fit; low-profile cordlock lets you uncinch the hood with one hand
- Breathable shell fabric features a durable water repellent (DWR) 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 and help keep it in place (liner not included)
- Designed to zip together with right-zip bags (not included)
- No-draft oversize collar and no-draft zipper help seal in warmth
- Exterior loops for hang drying or storage
- 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 | 13 degrees (F) - EN |
| Tested Comfort | 25 degrees (F) - EN |
| Temperature Rating (F) | 13 degrees (F) |
| Temperature Rating (C) | -9 degrees (C) |
| Shell | Ripstop nylon |
| Zipper Location | Left |
| Insulation Type | Down |
| Water-Resistant Down | Yes |
| Fill | 600-fil-powerl DownTek down |
| Lining | Nylon taffeta |
| Sleeping Bag Shape | Mummy |
| Stuff Sack Size | 8 x 17.5 inches |
| Stuff Sack Volume | 14.4 liters |
| Gender | Men's |
