How to Choose Sleeping Bags for Backpacking
Mammut Perform Fiber 19F/-7C Sleeping Bag
$167.73Compared to $239.95*Save 30%
Great for multiday hikes and overnights at the campground, the Mammut Perform Fiber 19°F/-7°C Sleeping Bag has an optimized fit for more comfortable sleep and a central zipper for climate regulation.
Key Details
Fill
Ajungilak synthetic fiber insulation
Weight
L: 3 lbs. 7 oz.
Compressed Volume
L: 21.1 liters
Temperature Rating (F)
20 degrees (F)
- Lightweight, small and compressible
- PFC-free durable water repellent (DWR) treatment
- Ajungilak fiber insulation ensures easy care and resistance to moisture
- Lining made from 100% recycled polyester
- Comfortable, soft material in the hood reduces noise and increases comfort
- Insulation chamber around the hood opening to protect from cold and wind
- Easy-to-use magnetic closure on the insulation collar
- Drawstring for easy adjustment of the hood and insulation collar
- Intuitive climate regulation with a central 2-way zipper
- Improved YKK zipper prevents jamming of material
- Insulated covering along the zipper to protect from cold bridges and enhance climate comfort
- Zipper garage reduces cold areas at the end of the zipper
- Internal pocket to store valuables
- Revised anatomic footbox for greater comfort without extra weight
- Includes a deep-sleep mask and earplugs to reduce light and noise
- Includes 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 Mammut 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 | 20 degrees (F) - EN |
| Tested Comfort | 30 degrees (F) - EN |
| Temperature Rating (F) | 20 degrees (F) |
| Temperature Rating (C) | -7 degrees (C) |
| Weight | L: 3 lbs. 7 oz. |
| Shell | 100% polyester |
| Zipper Location | Front |
| Insulation Type | Synthetic |
| Fill | Ajungilak synthetic fiber insulation |
| Fill Weight | L: 2 lbs. 6.9 oz. |
| Sleeping Capacity | 1-person |
| Lining | 100% polyester |
| Sleeping Bag Shape | Mummy |
| Fits Up To (in.) | L: 76.8 inches |
| Shoulder Girth (in.) | L: 58 inches |
| Hip Girth (in.) | L: 51 inches |
| Stuff Sack Size | L: 11.4 x 12.6 inches |
| Stuff Sack Volume | L: 23 liters |
| Compressed Volume | L: 21.1 liters |
| Gender | Unisex |
| Sustainability | Product meets the bluesign® criteria Contains recycled materials |
Buying Advice
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Doniphan P
Very narrow.
2 years ago
Ordered the "XL" size. I am 6'6", with proportionally wide shoulders. The bag is just long enough. But a flat cardboard cutout of me would not be able to fit shoulder-to-shoulder in this bag. It seems that only length was altered from the regular size to the XL size, so if you have the build of Jack Skellington, the XL might fit you. In fact, this might be the ultimate mummy for narrow-shouldered tall people, because the bag itself seems quite nice. In retrospect, the bag description on Mammut's page hints at the fact this bag is slim, but beware buying a bag without shoulder dimensions.
Originally posted on ExpertVoice.com
Eric B
Well Made and warm and packs relatively small.
3 years ago
The thing that really stands out to me immediately is the build quality and the materials used, the bag just feels well made and durable, held up nicely to my dog pawing at me while I was in it. It also does pack up fairly small if you use a proper compression sack, but obviously not as good as down. Haven't fully tested it out in the colder months yet but seems accurate to the rating. Comfortable to sleep in fully zipped. cons: The zipper snags despite the guard on the zipper and the material makes you more likely to slip off some sleeping pads during the night.
Originally posted on ExpertVoice.com
Anonymous
This is a great bag
2 years ago
One of the first things that I noticed and fell in love with this bag was how small I can compress it! It was great in 20 degree weather and had plenty of room for me to fit into. One of the coolest features was not just the internal pocket but also the mag lock at the top of the zipper- really helped keep the bag secure. Also the interior of the hood is a soft material that keeps the nylon noise to a minimum! Great bag!
Originally posted on ExpertVoice.com
Kevin S
High quality bag
1 month ago
Very high quality bad. Superior to Nemo bags. Used car camping and multi day rafting. Didn’t give full stars because it’s a little heavy and bulky, especially when compared to the down version (which is my favorite bag Earth!). When a little extra weight/ bulk doesn’t matter, this is my go to.
Originally posted on ExpertVoice.com
Anonymous
Frankfort, KY, US
Wow! What a great bag.
4 years ago
The fit is great for my 6' height and average shoulder width, and the quality of materials and finish is excellent. But what really impressed me are the features, like the magnetic zipper lock and center zipper. I am very pleased!
Originally posted on ExpertVoice.com
Alex B
2 months ago
Sleeping bag is very soft and warm. I wasn't sure how I would feel about the center zipper but it has been very nice. I would want a middle zipper on future bags aswell.
Originally posted on ExpertVoice.com
Mauricio C
Palmer, AK, US
Great Design and cost/benefit
2 years ago
I loved the quality and the innovations on the design. Packs small for the provided warmth.
Originally posted on ExpertVoice.com
Anonymous
Westminster, CO, US
3 years ago
Great bag for summer into fall. Nice construction. I like the center zipper.
Originally posted on ExpertVoice.com
James W
2 years ago
Lightweight, easy to pack bag. Warm during cold night. A little snug.
Originally posted on ExpertVoice.com
ryan s
Great overall bag
10 months ago
Great bag. Did the job it needed to in sub 45 degree weather
Originally posted on ExpertVoice.com
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