How to Choose Sleeping Bags for Backpacking
Mountain Hardwear Lamina Z Flame Sleeping Bag
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A great choice for backpacking, this spacious 3-season bag compresses small and strategically places insulation to concentrate warmth where you need it most—around your core and your feet.
Shop similar productsKey Details
Fill
Thermal.Q synthetic fibers
Temperature Rating (F)
22 degrees (F)
- Unique welded construction reduces weight and bulk, maximizes insulation loft, eliminates cold spots and thermally maps insulation to areas where warmth is needed most
- Thermal.Q insulation has outstanding compressibility, maintains excellent loft and continues to insulate even when damp
- Comfort mummy fit offers room to move while remaining thermally efficient
- Ergonomic draft collar and tailored hood with face gasket comfortably block drafts and seal in warmth
- Comfort footbox follows natural foot position for maximum warmth and comfort
- Soft polyester lining wicks away moisture and lightweight nylon shell has a durable water repellent finish to ward off moisture
- Full-length #5 zipper with double sliders for versatile ventilation
- Zippered pocket at shoulder
- Nylon compression stuff sack and mesh storage bag included
- 22°F EN (European Norm) lower-limit rating is suitable for 3-season use
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 Mountain Hardwear 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 | 22 degrees (F) - EN |
| Tested Comfort | 32 degrees (F) - EN |
| Temperature Rating (F) | 22 degrees (F) |
| Temperature Rating (C) | -6 degrees (C) |
| Shell | 30-denier ripstop nylon |
| Zipper Location | Left |
| Insulation Type | Synthetic |
| Fill | Thermal.Q synthetic fibers |
| Fill Weight | 1 lb. 14 oz. |
| Lining | 40-denier polyester taffeta |
| Sleeping Bag Shape | Mummy |
| Stuff Sack Size | 7 x 15 inches |
| Gender | Unisex |
Buying Advice
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Most Helpful Favorable Review
Lightweight, affordable, compact
Cowboy Coffee9 years ago
This is a great sleeping bag. It’s light, warm and compacts down to nearly the size of a warm-weather bag. I’ve been looking for a compact bag that gets me down close to 20 degrees F, especially after having spent some cold nights in the 20s and 30s wearing a jacket and all the clothes I had with me trying to sleep in a bag that goes down only to 45 degrees F. This bag solved that problem. I was wearing only a long-underwear bottom and top at 28 degrees F and was plenty warm, toasty even. So much so I could get out to use the tree (restroom) while keeping a high enough core temperature I was not shivering by the time I returned to my sleeping bag. And, it was windy that night to the tune of 30 mph.
This bag has a draft collar and a nice draw string that tightens up around my face. I actually slept with my face exposed since I was warm enough I didn’t need my head buried.
I’m 5 foot 11, so I bought the longer bag. I have the Osprey Atmos pack and can fit this bag, inside its compression bag, and an air pad inside my lower compartment just as I did with my warm weather bag.
One other note, this bag has a water repellant on it. I accidentally spilled part of a bottle of water on it just before I was going to bed. As you can imagine, I freaked out when I knocked over my water and thought for sure my first night with my new bag would be a wet one. It wasn’t. The water beaded on top, which caused me to pause and look at it. I then opened my tent door and shook it off.
My only gripe would be the zipper gets caught fairly easily in the material of the bag but I have never owned a sleeping bag in which that did not happen and I’ve owned six bags in the last 30 years. The zipper getting caught also was a pain when I heard a small animal outside my tent and wanted to take a look. Trying to get it unzipped quickly, with me flailing around scared the animal off before I could even get the bag off my upper body and look out. Regardless, warmth is the most important thing when I’m in the bag so this was a small gripe and not enough to knock it down to four stars.
I did a fair amount of research looking for a sleeping bag to get me down to the low 20s to replace a bulky 25 year old bag I stopped using because it was so big. I narrowed it down to the Mountain Hardwear Lamina Z Flame based on temperature rating, weight and cost (wanting to stay under $300), as my three main factors.
The only thing I really can’t answer is durability but I can say in one cold outing the first week I got the bag, I was a very happy camper, a very happy camper. I would recommend this bag.
Cowboy Coffee
Lima, OH
53 people found this review helpful
Most Helpful Critical Review
Too Cold
hiker11198 years ago
I have used the bag twice. The first time was in Zion last summer with overnight temps in the low 50's or high 40's. Last week I tried to sleep in it on Mt. San Jacinto with lows in the mid 30's. I was cold so I put on long pants, wool socks, a sweatshirt and an insulated North Face jacket liner. I was still so cold I couldn't sleep.
The zipper is another negative. When operated from inside the bag, it snagged every time. It worked well every time when pulled from outside the bag.
On the plus side, the bag does pack down to a small size and is light on the back while hiking. However the lack of sleep in temps well above the bags rating make me want to take it back.
hiker1119
San Diego County, CA, United States
7 people found this review helpful
LandonC
Portland, Or
Does the job. Packs small
9 years ago
I was comfortable down to 28F with no clothes but haven't tested it beyond that. I first detected a very faint chill at 30F with no clothes. I estimate at 23F, with no clothes, it will hit the neutral horizon where it starts becoming cold. It is a very roomy bag. That's good for the spring and summer, but less ideal for colder nights. It also has a draft collar which is a nice addition for an economical bag. It lacks a drawstring making it hard to use it efficiently though. It packs down small for a synthetic 22F bag which is another nice feature. A dependable, low-priced bag with a draft collar which is surprisingly warm and comfortable with no clothes on down to the mid 20s.
SOBeing
Southern Oregon
Short/Wide
9 years ago
After twenty plus years my Blue Kazoo just wanted to stay home. The search for a new bag took me most of a year. Then i found this one! For the first time ever i can sleep with zipper closed! I am 5' 6". Have a thirty one inch waist and must wear XL shirts due to shoulder width. I weigh 175lbs. This bag actually is comfortable. I can roll over without taking the bag with me. I like the shoulder pocket. Have been just to upper twenties with it but it performed very well. Would buy another without a doubt. If your built wide this is your bag.
hiker1119
San Diego County, CA, United States
Too Cold
8 years ago
I have used the bag twice. The first time was in Zion last summer with overnight temps in the low 50's or high 40's. Last week I tried to sleep in it on Mt. San Jacinto with lows in the mid 30's. I was cold so I put on long pants, wool socks, a sweatshirt and an insulated North Face jacket liner. I was still so cold I couldn't sleep. The zipper is another negative. When operated from inside the bag, it snagged every time. It worked well every time when pulled from outside the bag. On the plus side, the bag does pack down to a small size and is light on the back while hiking. However the lack of sleep in temps well above the bags rating make me want to take it back.
No, I do not recommend this product
Anonymous
Oskaloosa, Iowa
Totally satified
9 years ago
Used this bag at the Boulder Field on Longs Peak for the 1st time a week before Labor day. Very windy, rainy, and a long cold night. Stayed warm inside the Z during the night. Dried out good early after hiking in the rain to camp. Very satisfied. I fact my daughter now owns this one while I am purchasing another. Great price and packed well too! Love the color-big Packers Fan!
Capo
great backpacking bag
8 years ago
I use this bag to hike a section of the Superior Hiking Trail in September 2016 and Joshua Tree National Park in March 2017 (and several car camping trips over the last couple years). The bag is quite comfortable into the low 40s. The draft tubes and collar are very effective. The cut is very generous, plenty of space to roll around. I was impressed at how small it could be compressed, competitive with a down bag. Unlike other reviews, I've had no zipper problems. The price was reasonable considering the quality. I would definitely buy again if I needed another bag.
Yes , I recommend this product
Cowboy Coffee
Lima, OH
Lightweight, affordable, compact
9 years ago
This is a great sleeping bag. It’s light, warm and compacts down to nearly the size of a warm-weather bag. I’ve been looking for a compact bag that gets me down close to 20 degrees F, especially after having spent some cold nights in the 20s and 30s wearing a jacket and all the clothes I had with me trying to sleep in a bag that goes down only to 45 degrees F. This bag solved that problem. I was wearing only a long-underwear bottom and top at 28 degrees F and was plenty warm, toasty even. So much so I could get out to use the tree (restroom) while keeping a high enough core temperature I was not shivering by the time I returned to my sleeping bag. And, it was windy that night to the tune of 30 mph. This bag has a draft collar and a nice draw string that tightens up around my face. I actually slept with my face exposed since I was warm enough I didn’t need my head buried. I’m 5 foot 11, so I bought the longer bag. I have the Osprey Atmos pack and can fit this bag, inside its compression bag, and an air pad inside my lower compartment just as I did with my warm weather bag. One other note, this bag has a water repellant on it. I accidentally spilled part of a bottle of water on it just before I was going to bed. As you can imagine, I freaked out when I knocked over my water and thought for sure my first night with my new bag would be a wet one. It wasn’t. The water beaded on top, which caused me to pause and look at it. I then opened my tent door and shook it off. My only gripe would be the zipper gets caught fairly easily in the material of the bag but I have never owned a sleeping bag in which that did not happen and I’ve owned six bags in the last 30 years. The zipper getting caught also was a pain when I heard a small animal outside my tent and wanted to take a look. Trying to get it unzipped quickly, with me flailing around scared the animal off before I could even get the bag off my upper body and look out. Regardless, warmth is the most important thing when I’m in the bag so this was a small gripe and not enough to knock it down to four stars. I did a fair amount of research looking for a sleeping bag to get me down to the low 20s to replace a bulky 25 year old bag I stopped using because it was so big. I narrowed it down to the Mountain Hardwear Lamina Z Flame based on temperature rating, weight and cost (wanting to stay under $300), as my three main factors. The only thing I really can’t answer is durability but I can say in one cold outing the first week I got the bag, I was a very happy camper, a very happy camper. I would recommend this bag.
August1988
Chicago, IL
Solid Choice
9 years ago
I've used this bag for a few months now, and it does its job well. Critically, i used it continuously for three weeks and it didn't accumulate odor like other bags I've used. As another user commented, the zipper does tend to catch pretty regularly which can be a minor annoyance.
coutte36
Monterey, CA
Warm, but zipper snags
9 years ago
I recently used this bag for a car camping trip on Antelope Island in Salt Lake. I had used this bag a few times prior, but hadn't had a chance to test its limits. I went to sleep wearing only a polyester sweatshirt, nylon pants and wool socks and gloves. I run pretty warm generally, and only have an issue w/ my fingers and toes getting cold. It was about 30 F and I felt myself actually slightly overheating. I only woke up only once in the night, mostly from having to relieve myself. The temp dropped to about 19 F that night; my toes were a bit cold, but I was otherwise pretty warm. My only qualm is the zipper snagging. No matter how slowly or carefully I zipped up, the zipper would snag every 4 inches or so, which can be super frustrating in sub-freezing temperatures. But, in the end, how quickly a bag zips up isn't reason enough to condemn it. Overall, I'm pretty happy with the bag, it's warm, light weight, compact, and super waterproof. I'm looking forward to backpacking with it in more reasonable temperatures.
VA backpacker
Virginia
Pretty good
7 years ago
I've used the bag quite a few times now in different climates and temperatures. I mostly like it, with some reservations. I start to get cold in the 30s while wearing clothes. I also get a clammy feeling in it so I don't think it breathes all that well. (My guess is this is a combination of the synthetic fill, 40D liner, and DWR finish.) Cold and clammy is unpleasant. It does compress relatively small but it's still on the heavier side for backpacking bags, especially compared to a down bag. The build quality is bulletproof, very well made. The DWR finish is good to keep that tent wall condensation from soaking in. Overall I think it will last a long time- as my backup and wet weather bag.
Yes , I recommend this product
jsblakley
Indiana
So Far, Real Good
9 years ago
Just purchased a few weeks ago - hoping to have a bag to extend my spring and fall trips. Comfy and warm. First use was in my hammock on a chilly night, this bag may allow me to skip the sleeping pad that I've been using to help insulate. Roomy. Didn't get the "cramped" feeling I get in other mummy bags on cold nights. Feet were free to move around and shoulders didn't feel boxed in.
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