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Pack small, travel fast.

The Alps Mountaineering Compression Sack not only shrinks bulky items like sleeping bags or puffy jackets, but it also features a zippered pocket in the lid to keep smaller items from getting lost in the depths of your pack.

  • Four compression straps
  • Top lid with zippered pocket
  • Bottom handle
  • Double stitched seams

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Here's what others have to say...


Smaller is better...

  • Familiarity:I've used it several times

Well, in this case it is... The small (Blue) is the most useful for my purposes. IN TWO of these I can fit a tent (3 person Mountainsmith) and in the other I put a rain fly and ground cover. Worked great


sufficient for my needs

    Wish there were straps that would keep the extras from flapping around.


    Sz small is good for clothes

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

    I was off in gauging what size I would need. A few reviewers have mentioned that they're able to get a single sleeping bag into a size small. I have a cheap synthetic 40 degree sleeping bag from Wenzel and it wouldn't fit into the small. Maybe a medium would've done the trick. Since these were on sale, I had bought 2 of them. Too much of a hassle to return them so I will just keep them to pack clothes (fits about maybe 3-4 days of outfits). The compression straps are very easy to tighten and loosen because of the buckle's design. You won't have to strain a muscle by trying to squash the bag down to make it smaller nor will you have to lose a finger attempting to free your cargo from the sack.


    stellar for the price

    • Familiarity:I've put it through the wringer

    These are well built compression sacks.. once upon a time I fit a bulky synthetic sleeping bag into one of these and lugged it around behind me lashed to the underside of my pack. When I finally decided it was too good of a work out and that I should upgrade to a highly compressible down bag, this compression sack was by no means retired. It's fantastic for shrinking down a weeks worth of clothes into a manageable bundle that can be easily unloaded in camp. Every winter I restore it to its original purpose, housing a 0 degree synthetic SlumberJack sleeping bag which is stored in the back of the Jeep as part of the family's winter car kit.


    Solid compression sack

    • Familiarity:I've used it several times

    I use the medium sack with my Northface Superlight 0 degree down bag, and it works great. The bag just barely fits in the compression sack, but then the sack holds it and and cinches down really well. Solid construction - I feel like I can yank on those straps as hard as I want.
    Zipper pocket in the lid is a cool feature.

    Unanswered Question

    Would the Alps Mountaineering Razor liner/bag be too small for the small? just curious because the sea to summit xs event sack is supposed to be perfect size?

    I have a 6'6" Kelty Ignite DriDown 20 sleeping bag. I'd like the smallest diameter compression sack that can work with this bag, do you think I could get away with a small compression sack or would I require a medium?

    Best Answer

    I have a 6'6" Northface Furnace 550-fill down bag and it fit's perfectly in the small size compression sack.


    i like these but not #1 to me

    • Familiarity:I've used it several times

    I bought this compression sack even though I have another brand of compression sack that I am in love with. this sack did its job, I don't really have any complaints. why is this a 4 and not a 5... really just because I still love Sea To Summit Ultra-Sil eVent Compression Dry Sack so much! the alps bag feels thicker and not as movable to me. but it does do its job.


    Rust M can compress a 20* sleeping bag

    • Familiarity:I've used it several times

    These sizing charts are so confusing and it's so hard to tell how much your item can actually compress. So here's what worked for me: I have a 20* synthetic REI sleeping bag that couldn't fit in the small at all, but was perfect in the medium!

    Rust M can compress a 20* sleeping bag

    Solid and durable

    • Familiarity:I've used it several times

    This is a very solid and durable compression sack for your bag or other soft goods. I put my long, 0 degree Marmot bag in the large and had room enough for my clothes and pillow on top. It is a bit heavy so I would recommend something else if you are looking to shave weight.

    I have a North Face Aleutian 20 Sleeping Bag. What size is recommended for my bag?

    Hey Ashley,

    So the The North Face Aleutian Sleeping Bag: 20 Degree Synthetic in a the regular version has a packed size of 9" x 17"

    This comes to be 1081.5 cubic inches or 17.75 liters.

    So for 17.75 liters, I'd suggest the M Liters for this stuff sack.

    Shoot me an email if you have any questions at all!

    Jared D.

    Expert Gearhead


    What compression sack size should I use for the sleeping bag ALPS MOUNTAINEERING CRESCENT LAKE 0 DEGREE REGULAR SYNTHETIC?

    Hey Rodrigo,

    So the ALPS Mountaineering Crescent Lake Sleeping Bag: 20 Degree Synthetic in a the regular version has a packed size of 9" x 18"

    This comes to be 1145 cubic inches or 18.75 liters.

    So for 18.75 liters, I'd suggest the M Liters for this stuff sack.

    Shoot me an email if you have any questions at all!

    Jared D.

    Expert Gearhead


    Unanswered Question

    I have the womens 15dg solera mummy and im looking at getting a quality compression bag, it came with a large one but my sleeping bag rolling skills are pretty decent and i end up with way too much extra room. Anyone have a comparable bag or sizing opinion.


    Rock solid, but also rock heavy!

    • Familiarity:I've used it several times

    This is a super tough compression sack. I've used it maybe 4-5 times so I can't comment on the longevity, but it feels really burly and seems like it'll last quite awhile. The only downside is the weight... it's got long straps, good buckles and a zip pocket at the top, which are all awesome features, but that definitely takes it out of ultralight or even "light" contention. That said, it feels like it will outlast me and at that price point, it's pretty awesome. I got the medium and I can cram by big fluffy zero degree down bag in it no problem. I don't think a zero degree bag would fit into the small unless you wanted to go to battle with it every time, but I could fit my 20 degree down bag into a small no problem.

    What would be a good size for a standard sleeping bag?

    For most synthetic mummy bags I would go with a medium. For a synthetic semi-rectangular bag I would go with a large. For a down mummy I would go with a small. For a down semi-rectangular I would go with a medium. Lots of differences between bags though. Give me a shout and we can discuss further.

    Eric Watford

    Expert Gearhead


    Ext. 6069

    Instagram: @ericwatford

    I'm trying to compare this to other...

    I'm trying to compare this to other compression sacks, which have size listed by volume. Do you happen to have a liter size on these? (I think I may need to look at a size large).


    Best Answer

    Hey PS,

    Rough math based on dimensions lists these as follows:

    S = 10L

    M = 20L

    L = 35L

    XL = 45L

    What size would best fit a Kelty Cosmic 0...

    What size would best fit a Kelty Cosmic 0 sleeping bag? I am getting ready to order the bag but it doesn't come with a compression sack(So I have read in the reviews.)

    Hey wil1412600556,

    I would suggest you get this compression sack in a size large so you can compress the Kelty Cosmic 0 bag down. I hope this helps.


    Fantastic sack!

    • Familiarity:I've put it through the wringer

    What can you say. Its lightweight, durable, soundly constructed and works as advertised with no disappointments.

    I've a MTH Lamina 0 sleeping Bag : 0 degree regular what size of Compression Sack would I get ?

    I have the mountain hardwear phantom 0 bag and the medium works perfect