Kelty Cosmic Down 21 Sleeping Bag
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Shop newer versionTurning the brrrrr into ahhhhh, the Kelty Cosmic Down 21°F sleeping bag warms you from head to toe, and from spring to fall in the high country.
Fill
550-fill duck down
Temperature Rating (F)
21 degrees (F)
- Soft, high-loft 550-fill-power duck down insulation provides exceptional warmth and light weight
- Baffle construction with differential cut eliminates cold spots; inner layer is cut smaller than the outer layer to create consistent thickness of insulation
- Polyester taffeta creates a smooth yet durable shell; polyester taffeta lining breathes for comfort and feels great against skin
- Top baffle draft collar drapes comfortably over neck and shoulders, sealing out drafts
- Formfitting hood has drawcords of differing widths at head and neck for easy identification and adjustment in the dark
- Ground-level side seam keeps draft tube in place, further helping prevent cold air from seeping through the 2-way, locking zipper
- Internal loops provide attachment for a liner (sold separately) to increase the warmth of the bag
- Pad loops provide attachment points to keep your sleeping bag and pad together, so you needn't worry about rolling onto the cold, hard ground (straps sold separately)
- Hang loops allow easy drying and storage
- Kelty Cosmic Down 21°F sleeping bag comes with a 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 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 | 21 degrees (F) - EN |
| Tested Comfort | 32 degrees (F) - EN |
| Temperature Rating (F) | 21 degrees (F) |
| Temperature Rating (C) | -6 degrees (C) |
| Shell | Polyester taffeta |
| Insulation Type | Down |
| Fill | 550-fill duck down |
| Lining | Polyester taffeta |
| Sleeping Bag Shape | Mummy |
| Hip Girth (in.) | 58 |
| Stuff Sack Size | 8 x 14 inches |
| Stuff Sack Volume | 12 liters |
| Gender | Unisex |