How to Choose Sleeping Bags for Backpacking
Marmot Always Summer Down Sleeping Bag
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For traveling light in summer, the ultralight and compressible Marmot Always Summer down sleeping bag provides reliable transport to dreamland.
Shop similar productsKey Details
Fill
650-fill duck down
Temperature Rating (F)
40 degrees (F)
- Certified 650-fill down with Down Defender treatment for improved water-resistance in wet conditions
- Anatomically designed footbox allows down to loft fully around your feet for optimum warmth and comfort; pocket in the footbox lets you slip in a hand warmer (sold separately)
- Nautilus multi-baffle hood envelopes your head in warmth; smooth, flat upper cord and hard, round lower cord make hood adjustments easy
- Insulated draft tube backs a full-length, 2-way, snag-free zipper to prevent cold air getting in
- Stretch tricot baffles provide strength and durability for long bag life
- Ground-level side seams keep warm air from escaping
- Zipper garage keeps zipper pull in its place at night
- Internal stash pocket stows nighttime essentials
- 2 hang loops for storing and airing out sleeping bag
- Stuff and storage sack included
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 | 31.6 degrees (F) - EN |
| Tested Comfort | 40.8 degrees (F) - EN |
| Temperature Rating (F) | 40 degrees (F) |
| Temperature Rating (C) | 4 degrees (C) |
| Shell | Nylon |
| Zipper Location | Left |
| Insulation Type | Down |
| Water-Resistant Down | Yes |
| Fill | 650-fill duck down |
| Lining | Nylon |
| Sleeping Bag Shape | Mummy |
| Stuff Sack Size | 7 x 14 inches |
| Stuff Sack Volume | 8.8 liters |
| Gender | Unisex |
Buying Advice
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Jon R
Seattle
Nice bag, but weighs 30% more than specs say.
9 years ago
The bag is well made. I'm 6'0" and average build, and the length of the regular size is more than adequate, but the girth is pretty tight. The foot box design is nice. The weight of the bag in its stuff sack is 2lb 1oz - not even close to the 1 lb 10 oz quoted weight. The stuff sack is about 1 oz of the weight. My scale is calibrated with known test weights and is "dead-on balls accurate" (it's an industry term). You really have to weigh sleeping bags, backpacks, and tents because the specs often give false low weights.
jaychervil
glacier park, mt
Weight is wrong
8 years ago
this is a good sleeping bag and well built. however if you are tote weight conscious, be aware the long bag weighs 2 lb 4 oz. that's a half pound more than it's claimed weight.
Yes , I recommend this product
Scott H.
Huntersville, North Carolina
Great value in a summer bag
9 years ago
Spent my first two nights in this updated bag last week. There is very little not to like here. For reference, I buy my gear with an eye toward backpacking i.e.durability and weight, but also do some base camping. You should also know that I have owned a 30 degree Marmot Hydrogen for the past 4 years. In my home state of NC, my Hydrogen serves as my colder weather bag and I truly love it. It's gotten me through some tough AT nights. So admittedly, when I decided to to replace my summer bag a few weeks ago I began with a bias toward Marmot. My initial impressions of this updated Always Summer bag are extremely positive. Here are a few important ones you may wish to consider: Workmanship:top notch,perfect stitching, attention to details are obvious, equal to more expensive bags; Liner Material: very comfortable, quiet, soft; shell Material: quiet, soft, compressible, water resistant; Sizing: roomy, traditional Marmot dimensions; Draft Tube: well insulated, no cold spots, insulation is synthetic not down(surprise); Draft Collar: only modest down insulation (it is a summer bag), has it's own draw string; Loft: plush for a summer bag; Fill: consistent throughout, no cold spots; Snag Free Zipper: truly innovative, remarkably effective, a game changer; Overall quality: 5 Stars As you can tell, I really like my new (updated) Always Summer bag. Chances are you will too.
Rosie87
Salt Lake City, Utah
More Versatile Than You Think
7 years ago
I have used this bag year-round and just throw in a silk liner + a well-placed rain-fly during cold months and it's honestly always been warm enough for me down to about 20 degrees. I sometimes boil water, fill my bladder with it, and add it to the bottom of the sleeping bag just for help with those cold feet. It's been a great bag and I've had it for 7 years now with fairly heavy use.
Originally posted on marmot.com
MikeH
Yakima, WA, United States
Definitely for Summer
8 years ago
I sleep very warm. My other bag is too hot even in the 30's, so I bought this one for warmer weather. I was very cold several nights with temps in the mid-forties. Unless a few less ounces really matters, I'd go for a bag with a little more down. Nice quality bag, though.
Yes , I recommend this product
Originally posted on marmot.com