How to Choose Sleeping Bags for Backpacking
Marmot Never Summer Sleeping Bag - Men's
$251.73Compared to $339.00*Save 25%
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.
Key Details
Fill
650-fill-power down
Weight
Long: 4 lbs. 1.1 oz.
Temperature Rating (F)
0 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) | 0 degrees (F) |
| Temperature Rating (C) | -18 degrees (C) |
| Weight | 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 | Long: 2 lbs. 12 oz. |
| Sleeping Capacity | 1-person |
| Lining | 100% preconsumer recycled nylon taffeta |
| Sleeping Bag Shape | Mummy |
| Fits Up To (in.) | Long: 83 inches |
| Shoulder Girth (in.) | 64 inches |
| Hip Girth (in.) | Long: 59.8 inches |
| Stuff Sack Size | Long: 9.1 x 18.5 inches |
| Stuff Sack Volume | 33.4 liters |
| Gender | Men's |
| Sustainability | Contains recycled materials |
Buying Advice
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Location:Colorado Springs, CO
7 days ago
Nice and toasty
Grabbed this bag before a camping trip out to the Colorado Flat Tops where the lows were expected to be in the low 20s. Definitely not near 0 degrees, and I was in a roof tent with an Exped DeepSleep Duo mat wearing a smartwool base layer. With the zips pulled down a little bit it gave me a bit of ventilation, but kept me plenty warm with plenty of room to move around, a huge plus for being a side sleeper.
Location:New York
Age:45–54
2 weeks ago
Mediocre build quality, bulky for down, but warm.
This is pretty bulky about the same size as my old synthetic one. Build quality is mediocre at best. Loose threads on every stitch. Dos not zip all the way down so you need to wiggle yourself out of it. But its warm. I guess you get what you pay for.
Age:45–54
Location:Green Mts of VT
Age:45–54
8 months ago
Go Long!
No, I do not recommend this product
I’m 5’11” and 210lbs, so usually the regular length bag works. This is a pretty snug fit in both length and circumference at the shoulders, so I’d recommend the long size. I do like that the foot box has an expansion zipper.
Age:45–54