Western Mountaineering AlpinLite 20 Degree Sleeping Bag

Western Mountaineering AlpinLite 20 Degree Sleeping Bag is rated 4.9 out of 5 by 27.
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4.8 Star Rating
$540.00 - $585.00

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Product Description Item No.   10016892

The Western Mountaineering AlpinLite 20 Degree Sleeping Bag is a wider version of the super popular Ultralite sleeping bag. When it comes to loft, you're getting 5" of fluffy goodness to snuggle into during the night, thanks to it being packed full with 19 ounces of 850+ fill down. The full-length zipper is protected by a down filled draft tube while your neck is surrounded by a down collar. Rated to 20°F you can take this on your next backpacking trip and have plenty of room for your shoulders from day 1 to day 20.

FEATURES of the Western Mountaineering AlpinLite 20 Degree Sleeping Bag

  • 3-Dimensional full down collar wraps snugly around your neck to seal in your body heat
  • 5 1/4 spacing of continuous baffles that stretch from zipper to zipper
  • Full-length YKK zipper
  • 19 oz of down fill insulation gives this bag 5" of loft
  • Full draft tube that runs the entire length of the zipper to eliminate cold drafts from ruining your slumber
  • 64/39 shoulder/foot girth gives you some room to add layers if the temp drops

- + Product Specifications
Stuff / Compression Sack Dimensions: 8 x 15 in.
Gender: Mens
Features: Draft Collar, Made in USA
Best Use: Mountaineering and Alpine, Ultralight Backpacking, Backpacking
Weight: 31 oz
Exact Temperature Rating: 20 Degrees Fahrenheit
Sleeping Bag Shape: Mummy
Fill Details: 850+ Fill Down
Zipper Side: Right
Fill Weight (Regular): 19 oz
Max User Height (Regular): 6 Feet
Foot Circumference (Regular): 39 in.
Shoulder Circumference (Regular): 64 in.
Hip Circumference (Regular): 55 in.
Ultralight: Yes
Disclaimer: We only ship this brand to US Addresses.
Insulation: Down
Temperature Rating: 11 - 20 Degrees Fahrenheit
Rated 3 out of 5 by from Good materials and workmanship. Small bag, I am 5' 6" thus I bought a 5'6" bag or small, I do fit on it but I feel pretty that it does not have the room as advertised. Also Mountain Mountaineering boasts that their bag is roomy and I found it to be not so.
Date published: 2018-06-12
Rated 5 out of 5 by from Easily best bag I've ever owned I was so freaking stoked to get this bag as I'd heard and read so many great things about their bags. Let me just put it this way: I laid it out with my Therm-a-Rest NeoAir XTherm in backyard to test it out....and long nap comfy. So light, just beautiful bag. Zipper so nice and fluid. This thing is just dope. Absolutely perfect 3-season bag for high alpine treks. Will contribute a lot to my ultra light efforts. Oh, and I'm a restless sleeper, need to toss and turn on my sides a lot and the extra room at the bottom for my feets is fantastic. Really walks the line well between traditional mummy and more freedom and comfort. Prolly get the Sequoia GWS for winter too. Western Mountaineering is the shiz. Worth every penny.
Date published: 2018-04-04
Rated 5 out of 5 by from Great sleeping bag This sleeping bag is good for use in the winter. It is really warmth. I don't need to worry about the temperature is lower then 32 degrees. I really love it.
Date published: 2018-02-16
Rated 5 out of 5 by from Amazing bag This bag is amazing. It's expensive but worth every penny. It's insanely warm, lightweight and well crafted. It's very comfortable against the skin and is the roomiest mummy bag I've ever owned. I highly reccomend western mountaineering and this is definitely one of the most versitile bags for light weight backpackers.
Date published: 2017-04-16
Rated 5 out of 5 by from Excellent Light bag I have owned this for about a year and used it many times. It is as warm as it is rated, has a comfortable lining, and is very light and compressible. Excellent product. The zipper has a stiffener which makes it easy to open and close for that late night bathroom trip.
Date published: 2016-12-30
Rated 5 out of 5 by from Best bag you can buy!! This bag provides ultimate comfort all while packing down to the size of a two liter in a compression sack. Used over Memorial Day weekend and wasn't too hot in my sleep. Opened it up and let the zzzs come in!
Date published: 2016-06-01
Rated 5 out of 5 by from Warm and light Feels somewhat warmer than its rating to a male cold sleeper. Very well made, with thoughtful touches that make it an effective part of a sleep system. The baffle placement allows you to push more or less of the down above or below you for more or less warmth. Keep in mind this is a technical bag, so you will need to treat it reasonably well to avoid damaging it, though it is not fragile.
Date published: 2016-01-12
Rated 5 out of 5 by from AlpineLite20 Degrees Sleeping Bag This product is better than advertised. Every stitch is perfect, the foot area so comfortable, and you can't jam the zipper.
Date published: 2016-01-06
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I camp in Northwest Rain Forest and rainy Northern Canadian Rockies. Is the outer shell water proof or DWR?

Asked by: Tagish Man
I did some more research on this matter, and found out this bag does come with very good DWR shell. I did talk to Western Mountaineering and confirmed it. They officially asked Moosejaw to delete the posting by Rocko Gigsby 2 days ago, but the posting is still there. It is very important to me. If the bag is waterproof or DWR treated I would definitely consider buying it, but if not I will not even think about buying it.
Answered by: Tagish
Date published: 2017-11-18

Can left zipper and right zipper bags of the same model and size be zipped together to form a double bag?

Asked by: winepro
Hiya winepro, thanks for your question! Yes! You can absolutely zip two of these bags together... but like you mentioned, make sure one is a left zipper and one is a right zipper. Hope this helps!
Answered by: Alice in Wanderland
Date published: 2017-05-25

I am a 5'7" woman should I go for a 5'6" bag or a 6 footer?

Asked by: Lewis
Thanks for the question! I think that the 5'6" option will leave you feeling shoved into the hood. With the 6FT size you will have room to be able to flex your toes downward - as that is how most people naturally sleep. If you are worried about your feet being cold, customers often place clothing at the bottom of their bag to conserve heat & take up the extra space. I hope this helps a little!
Answered by: Foxxy Cleopatra
Date published: 2017-09-04

I am 5'4". Should I get a 5'6" or a 6' size bag?

Asked by: Judi B
Hiya, thanks for the question! You should be fine in a 5' 6" bag. Hope this helps!
Answered by: Rocko Gigsby
Date published: 2016-08-30

I'm 5ft 10 woman. Would 6ft or 6ft 6 be better. 

Asked by: Gina
Thank you for the question! You will want the 6 foot size as you don't want a lot of extra space at the bottom of your feet. More room will allow heat to escape - so you will want to be all snug and toasty. Some people even stuff clothing or jackets at the bottom of the foot bed to trap in heat. Hope this helps!
Answered by: Foxxy Cleopatra
Date published: 2017-11-25
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- + Size Guide

Western Mountaineering AlpinLite Sleeping Bag

SIZE / MAX USER HEIGHT 5' 6" 6' 0" 6' 6"
Shoulder Girth 63" 64" 65"
Hip Girth 56" 56" 56"
Foot Girth 39" 39" 39"
Fill Weight 17 oz 19 oz 21 oz
Total Weight 1 lb 13 oz 1 lb 15 oz 2 lb 1 oz
Stuffed Size 7 x 13" 8 x 15" 8 x 15"
Loft 5.5" 5.5" 5.5"