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Description

Low weight rules in the big mountains.

Climbing or traversing technical pitches with a massive load dangling behind you is a bad way to go through life. Western Mountaineering created the Alpinlite 20-Degree Down Sleeping Bag for alpine climbers and weight-obsessed backpackers who demand top-shelf quality and bottom-line weight savings. Though it packs the warmth of 850-fill goose down and a full draft collar, the Alpinlite 20 weighs in at just over a pound.
  • Highly breathable nylon shell fabric expels perspiration so that it doesn't condense in the down insulation and cause it to clump
  • Ultra-premium 850-fill down insulation retains your body’s warmth and provides a higher warmth-to-weight ratio than any synthetic-fill insulation
  • Continuous baffles and a down-filled collar prevent energy-sucking drafts from zapping your slumber
  • Wider shoulder girth allows for extra layering in colder environments
  • Western Mountaineering bags are made in the USA

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Review Summary
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Western Mountaineering Alpinlite Sleeping Bag: 20 Degree Down

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What is the weight for this sleeping bag?...

Posted on

What is the weight for this sleeping bag? The weight is listed on the Western Mountaineering website as 1 lb 15 oz for the regular, not 1 lb 3 oz as shown here.
http://www.westernmountaineering.com/index.cfm?section=products&page=sleeping%20bags&cat=ExtremeLite%20Series&ContentId=28

Best Answer Responded on

Hey Emily,
The correct weights are below:
Short- 1 lb 13 oz
Regular- 1 lb 15 oz
Long- 2 lb 1 oz

We are working to get the tech specs changed on our site.

5 5

first and last down bag

  • Familiarity: I've used it once or twice and have initial impressions

I purchased this bag for myself as I have gotten into backpacking, and was tired of carrying my overweight and oversized kelty synthetic bag. This sleeping bag is just awesome!!! So warm I end up hanging a leg or arm out in 30*f weather! This bag is light, super small when packed, and one of the truest temperature ratings I've ever encountered. you will not be disappointed with this bag even down to the 10-15*f range.

5 5

Sweet bag!

  • Gender: Male
  • Familiarity: I've used it once or twice and have initial impressions

I'm 6'1" 225 and this is the perfect bag. I considered an Ultralite 20 but VERY happy I went with this instead. I need the room to turn & like the option to keep other clothing inside for something warm to wear in the morning.
I used it inside a double walled tent with a Thermarest Z-Lite SOL Sleeping Pad underneath. I wear merino wool socks inside mine along with "whatever" choice of long underwear as it was in the 20's where I lived. I was in my backyard & just wanted to test everything out. I also wore a 80% polyester/20% nylon blend balaclava; Cordura from Ranger Joes (that I noticed was surprisingly better than the merino wool offering from Smartwool)
Staying warm was not a problem in this bag, and I did not cinch up the available ties (there was no need as I had on a balaclava) No cold spots, even when my heels came off the mat & were in direct contact with the freezing tent floor I'd barely notice it, but I did have to scoot back up on the mat where I belonged. I can't tell you from experience (as it is very rare to get into the teens here temp wise) but I have a confidence I could have done so, but I bought the bag for a 20 degree rating only because that's the worst it gets around here & even then its only for a few days max.

The only gripe I had about my night was traffic noise on the adjacent highway I was not used to hearing from inside the house

5 5

One of my favorite pieces of gear I own

  • Familiarity: I've put it through the wringer

Truly one of the favorite pieces of gear i own. Super warm, super light, super packable, super high quality construction. What else is there really to say about a sleeping bag? Outstanding in all regards!

Unanswered Question

From OutdoorGearLab:
"Some of the smallest...

Posted on

From OutdoorGearLab:
"Some of the smallest premium companies, such as Western Mountaineering, source the highest down from geese that aren't live-plucked or force fed; they collect naturally shed down from molting. Some vegans might consider avoiding down down products or purchase them from a company such as Western Mountaineering, that guarantee no harm to animals."

Can anyone confirm this? I didn't find anything about it on http://westernmountaineering.com/

4 5

A Roaster

  • Familiarity: I've used it several times

This bag is great quality! Western Mountaineering kills it when they make sleeping bags and this bag is as awesome as it sounds, it does, like all down bags, loose down throughout its adventures. All around great bag though except expensive but you get what you pay for!

5 5

Great bag

I love this bag. It has been warm on nights in a makeshift shelter in the 30s. I would feel comfortable taking it down towards that rating in a tent, but not really in a makeshift shelter. Quality of the bag is nice. Packs down small, zippers don't snag often, fabric and baffles feel good. Low weight, yet doesn't feel constricting. Nice bag! Plus made in the USA!

5 5

WRONG WEIGHT #'s

Looking at Western Mountaineering's website, the weights listed on this description are very wrong. I can't rate since I did not buy, but I picked 5 stars as default.

http://www.westernmountaineering.com/index.cfm?section=products&page=sleeping%20bags&cat=ExtremeLite%20Series&ContentId=28

Responded on

From Wstn Mtn eng.:
5'6"bag 1 lb 13 oz stuff size 7 x 13
6'0"bag 1 lb 15 oz stuff size 8 x 15
6'6"bag 2 lb 1 oz stuff size 8 x 15
This is an excellent bag, the shell is great, but lighter than the Apaches, Antelopes and so on, also produced by wstn mtn eng.

5 5

Fantastic 3-season bag

I have been running the Alpinlite for a few years now. I really like the warmth and lack of weight.
The width is a bonus for me, as I am rather broad across the chest(44 coat size)and am a side sleeper.
I haven't had this bag much below 15*F, but in those cases it was still very warm-I have a hunch I could go into the high single digits with just a base layer and wool cap sleeping in the Alpinlite.
I will never part with this sleeping bag.

hi, are you guys getting more small 5'6...

Posted on

hi, are you guys getting more small 5'6 sizes??? i need one!!!

Responded on

They should get some at the beginning of next month.

5 5

Perfect bag for broad dudes

6'5", 235lbs. Wear a 50L jacket, 34-36 inseam and waist. My arms aren't huge but they won't fit into the "check your blood pressure" thing at Walgreens. Point is, I take up some space.

The Alpinlite was perfect for my size. I move around a bit and never once felt claustrophobic, but I can't imagine having less space. I think I would have been freaking out in Ultralite. The 6'6" version of this bag couldn't have been a better fit. I never got cold at altitude and only got hot once at lower levels, but it was around 50* and I was still wearing a shirt and shorts so that one was on me. All it took was unzipping the bag a bit and it regulated nicely.

I thought I was crazy dropping almost $500 on a bag but this thing is absolutely awesome and it shows in the details: the stuff sack is perfectly sized and the zipper has smart things like a stiff backing so that you don't catch the bag in the zipper. I can't say enough great things about this bag.

I am trying to decide between the Alpinlite...

Posted on

I am trying to decide between the Alpinlite and Ultralite. I am a side sleeper and toss and turn throughout the night. Avg build guy at 5'9" 160 lbs. Which would you recommend?

Responded on

Sounds like the Aplinlite would be to big for you.

Responded on

Do you prefer a little more room for tossing and turning inside the bag or for the bag to move with you as you toss and turn? If you prefer inside the bag, go Alpinlite. If you want the bag to toss and turn with you, Ultralite.

You'll fit fine in both, but the Ultralite is a true mummy bag and the Alpinlite will be a little more roomy but have more internal "dead" space to heat up--so it'll have more down and more fabric and be an ounce or two heavier...

Responded on

Thanks for the quick responses. I normally am a warm sleeper so the empty space is okay. I prefer to have the room when I do toss and turn. The true mummy would be a little to compact I guess. Thanks looks like I will go with the alpinlite.

Correct Weights

Correct Weights

Posted on

Short 1lb 13oz
Regular 1lb 15oz
Long 2lb 1oz

Responded on

The weights listed by BC are essentially those for the Summerlite (exception being the short model is 1lbs 2oz), which is WM's lightweight, continuous baffle bag with the Microlight XP fabric. Jerimy posted the correct WM published weights for the Alpinlite.

Responded on

It is very interesting how often Backcountry makes mistakes in their specs.

Alpinlite Review

Posted on

A video review of the Western Mountaineering Alpinlite Sleeping Bag

5 5

Warm and wide

This is a premium bag. It's a mummy bag, but it's wider than a traditional mummy... which is great for those of us that like to move around while sleeping. It's very warm however, and has some cool features. It has excellent loft and compresses nicely. I have a full video review at backpackersreview.com

5 5

Awesome bag, but pretty wide

I absolutely love this bag and would have kept it if I was bigger. I was initially torn between the Ultralite and Alpinlite, and ended up with getting the Alpinlite first. After some time in that bag I just found there to be too much dead air from the extra girth, but the Ultralite was snug to the point where I was worried about down compression if I had layers on. I returned the Alpinlite for the Versalite since it fit more snugly and rolled with me when I slept.

While the Versalite is slightly warmer than the Alpinlite or Ultralite bags, the chest girth sizing falls between the Alpinlite and Ultralite, which was perfect for me. The full length zipper allow for easy venting and I have no worries of overheating—I generally sleep very warm. The Versalite also comes with one more ounce of down than the Alpinlite, but is slightly narrower and thus warmer overall and spans a wider degree range. The full length zipper also allows the bag to be opened up and used like a quilt in warmer weather. I have taken both bags down to low 20s and the high teens and slept comfortably in a baselayer with the neck baffle completely loosened in the Versalite. The Alpinlite required me to cinch down both to trap in heat to fill the dead space.

The materials are top notch, the down is super lofty—WM bags are great.

Responded on

thanks for your review Mike
was just wondering how tall are you and your weight to compare my size thanks

Responded on

Yes, would be helpful as I am also considering one of these 3 bags depending on which one fits best.

Responded on

Sorry I just saw your comment. I am about 5'11'' and weigh 190 lbs., and to give a little more idea of sizing: 43" chest, 33" waist, 32" inseam.

5 5

Great bag

Finally a warm and light sleeping bag for big guys that doesn't fit like a condom. Field tested it this autumn in the Dolomites in Italy in open air around freezing temperatures. Didn't need long underwear to keep comfie. Great product, fully worth the price.

If im going to buy an waterproof compression...

Posted on

If im going to buy an waterproof compression sack as well, how many liters should i get it in?

Best Answer Responded on

hi there! a 5 liter bag would be tight, but doable, a 10 liter bag would be better, and plenty roomy. Hope that helps!

Responded on

Yeah, O4F hit that right. In say something like the Sea to Summit eVent Dry Sack, I would definitely go with the Small size (10-3.3L). Rule of thumb with comp sacks and sleeping bags- start with the original stuff size, let the straps do the work and compressing for you. Hope that added to the conversation.

5 5

Great Sleeping Bag!

Only used it twice but I love the fit. I'm 5'-2" and the bag fits perfectly with some room to spare for extra layers at the bottom.
My first trial was at the base of Mt Washington and the outside temp had dropped into the low 30s. I was cold with my base layers on but I run cold.
The second trial was in VT and the outside temp was in the 50s and damp. I was a bit too warm in the base layers on but boxers & undershirt was just right.
The only downside I experienced with the bag is the smell it gives off in damp conditions. The down smell can be a bit much even if the bag isn't directly wet.
Overall love the bag!

Responded on

What size bag do you have?

Responded on

The small 5'-6" bag

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