ALPS Mountaineering Compression Sack

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
  • Reviews
  • Q & A

Great compression sack

  • Familiarity: I've used it several times

I got the medium to make a sleeping bag more manageable and it works great. Instead of a big unwieldy blob we now have a neat compact package that takes up much less room. Very sturdy and great design.

Sturdy Stuff Sack

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

When you want to stuff stuff into stuff Id recommend this stuff sack. But, seriously, its a little heavier than some ultra lightweight competitors, but stronger/thicker materials than others as well. I like the exterior zipper pocket and feeling secure about the ripstop walls and stitching when you really crank down on the compression straps. The picture below is my 15 degree Big Agnes down sleeping bag rolled up WITH Therm-a-Rest style inflatable pad inside the medium size sack. Sorry I couldnt find any of my Nalgene bottles, but hopefully the Pringles give you perspective. I fully expect this sack to last for years.

Sturdy Stuff Sack

Motorcycle Camping

    I bought these to use on my motorcycle adventures. The do work but I've found that they are a bit heavy and bulky for my use. I've gone with another brand even though they cost more

    Good sack, does its job well

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

    Bought the Large compression sack for my sleeping bag. It does the job admirably, however, I do find that it is larger that it needs to be for the job. I am able to completely tighten the tension straps. This makes for a somewhat large sleeping bag. While completely serviceable, I do wish the sack was listed in litres on and not just in hight and diameter measurements.

    Unanswered Question

    I have an older edition (bought in 2013 I think) Mountain Hardwear Lamina 20. It's synthetic so it's heavier and bulkier but I was wondering which size would be good from these options and also if there's any risk in damaging the bag by using a compression sack like this?

    magic sack

    • Familiarity: I've used it several times

    fits my Marmot Col Sleeping Bag: -20 Degree Down perfectly and really makes a huge difference when packing for trips. perfection

    Derrick, I have the -40 Marmot and cannot find the perfect sack. What size did you get? Do you think the -40 would fit?

    Love the straps

    • Familiarity: I've used it several times

    I love how sturdy the straps on these compression sacks are. I also have the Sea to Summit compression sacks which are great for cutting weight, but the straps are a pain to deal with. I can easily fit my 30 degree down bag in a size small.

    Compression at Work

    This is the Medium Sack at about 3/4 compression capacity with my 0 Degree Big Agnes Down Bag inside.

    Compression at Work

    Is the sack waterproof?

    Great Piece of Gear to Have

    • Familiarity: I've used it several times

    I needed a compression sack for my down sleeping bad during an upcoming trip. This was the perfect option, durable, solid, compresses well and multi-functional. I felt that I could really crank down on the straps without feeling like I was going to break anything. I feel like there are a million uses for a compression sack if you are a big camper, and this a well-price, solid option.


    • Familiarity: I've used it several times

    Just using for vehicle camping to stuff a huge puffy bag and liner in. Compresses well. Seems durable enough. Great for the sale price!

    Solid useful gear

    • Familiarity: I've used it several times

    I picked up a few small sized bags to tame tents and sleeping bags on a family backpacking trip. Tough and functional.

    I have a Kelty Cosmic 20, which bag is right?

    Hey Mark - I would recommend the Small compression sack for your Kelty Cosmic 20 sleeping bag. Feel free to contact me directly with any additional questions.

    - Kyle L. - Expert Gearhead


    • Familiarity: I've used it several times

    Probably the best thing I could have had on my recent 4 day hike.
    I packed clothes in the small sack and compressed it down to put in my 65L pack with me. It worked like a charm. Gave me plenty of room in my bag and my clothes organized. The small was plenty enough for me on this hike. I have the medium as well, but probably would only use it on a longer hike than 4 days.

    Strong, good looks and great price

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

    Originally bought this for a backpacking trip in the North Cascades. This thing really came through. Super sturdy, strong material and does exactly what it needs to do

    Great compression and nice color

    • Familiarity: I've used it several times

    Got the L size for a -20 C TNF sleeping bag, the sleeping bag is huuuuge and couldn't fit inside my backpack with the compression bag included so I bought this bag and the four compressing straps make the difference, construction is great for the amount strength applied to the straps and overall compression bag.

    Great compression and nice color

    Works great

      High quality at a great price!

      Strong and Well-Designed

      • Familiarity: I gave it as a gift but have feedback to share

      Bought this as a gift and the XL fits a bulky synthetic sleeping bag with some clothes on top no problem. My sister was not looking for the lightest or most space saving option, just a solid compression sack for camping. So far she is happy with how durable the straps are even when you really tighten them down. She could probably size down to a L and still fit her bag, but having the extra space is not a problem

      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.