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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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Western Mountaineering Alpinlite Sleeping Bag: 20 Degree Down

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Here's what others have to say...

5 5

jordan.sch1740623

Member since 

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

Test

Member since 
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

Tim

Member since 

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.

5 5

Chris Rikli

Member since 

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...

S

Member since 
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?

Dave Marcus

Member since 
Responded on

Sounds like the Aplinlite would be to big for you.

Kate Williamson

Member since 
Groups:
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...

S

Member since 
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

Jerimy

Member since 
Posted on

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

Mike

Member since 
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.

Szu-Ping Lee

Member since 
Responded on

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

5 5

BackpackersReview.com

Member since 

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

Mike

Member since 

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.

Bryan Ward

Member since 
Responded on

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

Idtmcp5420

Member since 
Responded on

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

Mike

Member since 
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

Freek Strebe

Member since 

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...

veg4121640

Member since 
Posted on

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

Leta Sharpe

Member since 
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!

Phil Maher

Member since 
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

Jay S

Member since 

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!

Alison D

Member since 
Responded on

What size bag do you have?

Jay S

Member since 
Responded on

The small 5'-6" bag

The weight on this bag is incorrect, that...

spencer bowen

Member since 
Posted on

The weight on this bag is incorrect, that must be the fill weight.

Eli Hauschild

Member since 
Responded on

You are correct.

Size / Total Weight
5'6" / 1lb 13oz
6'0" / 1lb 15oz
6'6" / 2lb 1oz

Phil Maher

Member since 
Responded on

You want this bag, Spencer. And for that matter, so do you, Eli.

Leta Sharpe

Member since 
Responded on

From the Western Mountaineering catalogue, I got:

5'6" = 1 lb 14 oz
6'0" = 2 lb
6'6" = 2 lb 2 oz

Thanks!

I am 6' exactly, should I go with the long...

spencer bowen

Member since 
Posted on

I am 6' exactly, should I go with the long or would the Reg. be ok?

Phil Maher

Member since 
Best Answer Responded on

Hey Spencer,

I'm 6'-0" and own an Alpinlite. You can pull off a regular, but I prefer the 6'-6" model. I tried both sizes out before I bought, and the reg left me feeling short of shoved into the hood and right there with the draft collar. I longer one also gives me the ability to hunker in a little more and to shove some clothes down in the footbox. This is a great bag!!

Phil Maher

Member since 
Responded on

...And for everyone's consideration that has ever measured their height and used that number to determine which bag length is for them- remember that when you measure your height, your foot and ankle are at a right angle. When you sleep on your back, your feet naturally relax into a position of plantarflexion (downward). This can add at least a few inches or more to the amount of length you need.

5 5

Pete Jensen

Member since 

For starters, I'm a bigger guy, wide shoulders, overweight, the whole package, so usually I find mummy bags pretty claustrophobic, but the AlpinLite fits pretty well, it's not so tight that I can't move, but it's not so cavernous that it looses its function as a mummy bag.

I took this bag with me to the Grand Canyon in Nov '09, and while the night time temps dropped pretty low, down into the 40s or 30s, I was so toasty I had to open the bag up a little until fairly early in the morning. The weather was nice so I just set up on a picnic table and slept under the stars, no issues with condensation or anything.

I'm looking to do some winter camping next, I think due to the continuous baffles, I can probably shove some of the down from the bottom around to the top and maybe get a little extra loft, so we'll see how that goes.

Excellent Bag, Great Fit
e.c4166685

Member since 
Responded on

So how did your winter camping experiment work out?

5 5

Tom Gordon

Member since 

This bag has every right to be big, bulky and heavy...but it's not! This is the bag that I use the most. 20 degrees keeps me comfortable 3 seasons in the mountains and during spring and fall in the desert. I've never found a 20 degree bag that lofts as tall as this one. It's roomy for my stout stature yet weighs a scant 2 lbs. The stuff size is slightly greater than a football. Although this is made from Western's least water resistant shell, I awoke in the Cirque of the Towers one morning in Sept. to 24 degrees and 4 inches of snow covering me in my Alpinlite. (The stars were out when I went to bed. Why would I pitch the tent!)The bag was dry. I was warm. Just rolled over and went back to sleep.
If you're an ultralite fanatic and want to save another 1/2 lb., get the Ultralite. While you're wrapped tight in your 1 lb. 8 oz. bag, I'll be makin' babies in mine.

Phil Maher

Member since 
Responded on

Thank you for the thoughtful answer on the differences in the bags, Tom. I need that extra width, so the Alpinlite is the one.

4 5

rob3806747

Member since 

Used for the first time. Very light-weight and obviously very high quality bag. Unfortunately the temperature was between 50-60f degrees and I was too hot. I finally got comfortable around 4 am with the bag unzipped all the way. I think when I get to higher altitude, or the temp drops to around 30-40f it will be perfect.

what is the maximum stuff size?

YinYang

Member since 
Posted on

what is the maximum stuff size?

moroni

Member since 
Best Answer Responded on

Both the regular & long size AlpinLite stuffs down to 8" x 15" & by compressing, you can get it even smaller than that.

5 5

T Mueller

Member since 

i've been hiking 2 to 3 times a yr for the last 20+ yrs and i have finally found the bag i'll use for the next 20. this is probably the 8th bag i've owned ( 1st down ). I.m 6'1" and 215 lbs and i never feel restricted in this bag. i used it down to 30 deg with just a light base layer on. no cold spots. great workmanship ( made in usa ). just buy it !!!!!

e.c4166685

Member since 
Responded on

Long shot that you're still around, but, do you use the regular or the long version?

you guys have the weight listed incorrectly...

The Blue Bomber

Member since 
Posted on

you guys have the weight listed incorrectly for this bag. It looks like you have the FILL WEIGHT listed as TOTAL WEIGHT.

moroni

Member since 
Best Answer Responded on

You're absolutely correct. The "total weight" of the AlpinLite regular is 31oz, not 19.

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