Thanks to its fluffy down, the Marmot Never Summer men's sleeping bag prevents heat loss on cold nights. Strategic zippers let you configure for more foot space, extra warmth or blanketlike coverage.
Fill
650-fill-power down
Weight
Regular: 3 lbs. 14.8 oz.
Long: 4 lbs. 1.1 oz.
Temperature Rating (F)
-18 degrees (F)
- RDS-certified, 650-fill-power down with Down Defender to improve water resistance in wet conditions
- Dual-side half zippers for easy access; extended zipper flaps provide extra blanketlike coverage when unzipped
- Cinchable draft collar prevents heat loss
- Internal stash pocket
- Footbox zipper opens for extra space and closes for extra warmth and comfort
- Recycled shell and lining fabrics
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 Marmot 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 | 5 degrees (F) - ISO |
| Tested Comfort | 18 degrees (F) - ISO |
| Temperature Rating (F) | -18 degrees (F) |
| Temperature Rating (C) | 0 degrees (C) |
| Weight | Regular: 3 lbs. 14.8 oz. Long: 4 lbs. 1.1 oz. |
| Shell | 100% preconsumer recycled nylon ripstop |
| Zipper Location | Left/Right |
| Insulation Type | Down |
| Water-Resistant Down | Yes |
| Fill | 650-fill-power down |
| Fill Weight | Regular: 2 lbs. 9 oz. Long: 2 lbs. 12 oz. |
| Sleeping Capacity | 1-person |
| Lining | 100% preconsumer recycled nylon taffeta |
| Sleeping Bag Shape | Mummy |
| Fits Up To (in.) | Regular: 79 inches Long: 83 inches |
| Shoulder Girth (in.) | 64 inches |
| Hip Girth (in.) | Regular: 59.1 inches Long: 59.8 inches |
| Stuff Sack Size | Regular: 8.3 x 17.7 inches Long: 9.1 x 18.5 inches |
| Stuff Sack Volume | 33.4 liters |
| Gender | Men's |
| Sustainability | Contains recycled materials |