Built to keep you cozy even when nighttime temps hover near zero, the men's Kelty Cosmic 0 sleeping bag features 550-fill-power down in a thermally efficient in a trapezoidal baffle construction.
Fill
550-fill-power duck down
Temperature Rating (F)
4 degrees (F)
- Trapezoidal baffle construction promotes heat retention and thermal efficiency; 550-fill-power down insulation is warm and quick-drying
- 20-denier nylon taffeta outer shell is durable, yet buttery soft; 50-denier polyester taffeta lining is ultrasmooth on your skin
- C0 and PFC-free durable water repellent (DWR) coating helps repel moisture to keep you warm and dry inside
- Internal zippered stash pocket provides a convenient place to stash your headlamp, phone or other camping needs
- Dual-sliding, locking antisnag zipper makes it easy to get in and out and won't get stuck when you make ventilation adjustments
- Draft collar and hood help keep the hot air in and cold air out
- Spacious, natural-fit foot box allows more wiggle room for your toes
- Includes 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 the Kelty Cosmic Product LineView all Kelty 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) - ISO |
| Tested Comfort | 17 degrees (F) - ISO |
| Temperature Rating (F) | 4 degrees (F) |
| Temperature Rating (C) | -15 degrees (C) |
| Shell | 20-denier nylon |
| Zipper Location | Right |
| Insulation Type | Down |
| Water-Resistant Down | Yes |
| Fill | 550-fill-power duck down |
| Lining | 50-denier polyester |
| Sleeping Bag Shape | Mummy |
| Stuff Sack Size | 19 x 10 inches |
| Stuff Sack Volume | 24.6 liters |
| Gender | Men's |