How to Choose Sleeping Bags for Backpacking
Sale Ends Sep 1
Marmot Helium 15 Sleeping Bag
Sale Ends Sep 1
$321.69 – to $374.19Save up to 25%
Packing a lot of heat into a light package, the Marmot Helium 15 down sleeping bag is built for 3-season backpacking and mountaineering treks. It's great for cold sleepers in much warmer temps, too.
Key Details
Fill
800-fill-power goose down
Weight
Short: 2 lbs. 0.5 oz.
Regular: 2 lbs. 2.7 oz.
Long: 2 lbs. 6 oz.
Temperature Rating (F)
15 degrees (F)
- Certified 800-fill-power goose down features ExpeDRY for quicker drying
- Main zipper with antisnag slider and fold-down second zipper provides added ventilation and easy access
- Anatomically designed footbox with wraparound construction increases warmth
- Smooth, curved baffles reduce down shifting
- ISO tested for reliable temperature rating
- Stuff sack 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 | 16 degrees (F) - ISO |
| Tested Comfort | 27 degrees (F) - ISO |
| Temperature Rating (F) | 15 degrees (F) |
| Temperature Rating (C) | -9.44 degrees (C) |
| Weight | Short: 2 lbs. 0.5 oz. Regular: 2 lbs. 2.7 oz. Long: 2 lbs. 6 oz. |
| Shell | Nylon ripstop |
| Zipper Location | Left |
| Insulation Type | Down |
| Water-Resistant Down | Yes |
| Fill | 800-fill-power goose down |
| Fill Weight | 1 lb. 2 oz. |
| Sleeping Capacity | 1-person |
| Lining | Nylon plain weave |
| Sleeping Bag Shape | Mummy |
| Fits Up To (in.) | Short: 66 inches Regular: 72 inches Long: 78 inches |
| Shoulder Girth (in.) | Short: 58 inches Regular: 61 inches Long: 63 inches |
| Hip Girth (in.) | Short: 54.3 inches Regular: 55.9 inches Long: 57.9 inches |
| Stuff Sack Size | 7.1 x 14.2 inches |
| Stuff Sack Volume | 9.2 liters |
| Gender | Unisex |
Buying Advice
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Forgotmyname
Utah/Colorado
Durable, cozy, warm, everything you want in a bag
9 months ago
Absolutely the best. I sleep cold, so I use a sleeping bag all the time, even indoors. I love the way a down bag wraps around me and keeps me warm. I've used a Helium for a number of years now and love it. I also use it to tent and car camp a good third of the year. It's soft, warm, cozy, and has held up through years of nightly use and washings. I've had some good North Face bags, but am now a complete Marmot fan. I have a new second Helium in my closet in case my first one wears out and Marmot no longer offers them. I have to use great self-control to not buy a third - you know, in case of an apocalypse or something. I also have the urge to give them to all my family and friends, though I can't afford to. This bag has taken on a sort of mythical feeling, representing security, warmth, and sweet dreams.
Age:65–74
Weight:150–175 lbs.
Height:5'8"
Yes , I recommend this product
cgolkie
Colorado Springs, CO
Very light and very warm!
1 year ago
[This review was collected as part of a promotion.] Purchased this bag for shoulder season backpacking in Colorado. I used it for the firsttime last weekend. Night time temps got down to around 28F and this bag kept me toasty and feeling warm all through the night. It is incredibly light weight considering the fill and has a nice feel to the material. The only thing I would change is to have the secondary foot zipper extend further into the foot box area. It doesn't expel heat fast enough if you run warm.
Yes , I recommend this product
Originally posted on marmot.com
trainrunner238
Comfy in the cold
4 weeks ago
[This review was collected as part of a promotion.] Warm, lightweight, and compressible, this 15° sleeping bag is ideal for chilly nights. The insulation traps heat effectively, and the zipper doesn't snag. Perfect for backpacking or camping when temperatures drop but you still want packability and comfort.
Originally posted on marmot.com
EMAN
Colorado
The New Bag
3 weeks ago
[This review was collected as part of a promotion.] Lots of good to say about this bag. Very comfortable and packs down plenty. Easy to use zipper and adjustments around the top. Have yet to put it to the test outdoors, but look forward to many cozy nights.
Yes , I recommend this product
Originally posted on marmot.com
Loria
Colorado
Great sleeping bag
7 months ago
[This review was collected as part of a promotion.] Bought this as a gift for my son, he loves it and said it. He says it will be perfect for his backpacking trips and/or camping. Is lightweight. He is 6'5" and he says it fits him well.
Yes , I recommend this product
Originally posted on marmot.com
Scoots
Dyno-Mite
1 week ago
[This review was collected as part of a promotion.] Kept me warm and cozy on so many levels. To car camping in the ADK in the dead of winter to winter camping near Stowe. Great investment. Highly recommend
Originally posted on marmot.com
Brad775
Love it
1 week ago
[This review was collected as part of a promotion.] Great bag, light weight, keeps me warm, haved used for years from Mount Whitney to Yosemite Would recommend it to anyone
Originally posted on marmot.com
Avrula
Idaho
Excellent night of sleep
1 year ago
[This review was collected as part of a promotion.] Soft as butter, toasty warm, light as a feather. This is a go to back for cold backcountry.
Yes , I recommend this product
Originally posted on marmot.com
Jayswindowiee
Washington
Awesome Starter and Finisher
3 weeks ago
[This review was collected as part of a promotion.] Loved snuggling into this Absolute beast I cannot state enough how clutch this came in
Yes , I recommend this product
Originally posted on marmot.com
Stephanie S
MI
Perfection
2 months ago
Kept me warm and comfortable all night camping in Alaska and Montana!
Age:45–54
Weight:150–175 lbs.
Height:5'5"
Yes , I recommend this product
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