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  • Outdoor Research - UltraLight Compression Sack - Alloy
  • Outdoor Research - UltraLight Compression Sack - Agate
  • Outdoor Research - UltraLight Compression Sack - Lemongrass

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  • Outdoor Research - UltraLight Compression Sack - Alloy
  • Outdoor Research - UltraLight Compression Sack - Agate
  • Outdoor Research - UltraLight Compression Sack - Lemongrass

Outdoor Research UltraLight Compression Sack

sale $18.87 - $41.95

Free 2-Day Shipping on Orders Over $50 Order by 12/20*

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    • Agate, 20L
      sale $25.87
    • Agate, 5L
      sale $18.87
    • Agate, 8L
      sale $20.97
    • Alloy, 10L
    • Alloy, 15L
      sale $24.12
    • Alloy, 20L
      sale $25.87
    • Alloy, 35L
      sale $29.37
    • Alloy, 5L
    • Alloy, 8L
      sale $25.83
    • Lemongrass, 10L
      sale $22.37
    • Lemongrass, 15L
      sale $24.12
    • Lemongrass, 20L
      sale $25.87
    • Lemongrass, 35L
      sale $29.37
    • Lemongrass, 5L
      sale $18.87
    • Lemongrass, 8L
      sale $20.97

    30 Reviews


    Instead of strapping your sleeping bag to the outside of your pack like a rookie, pack it down to a manageable size with the Outdoor Research UltraLight Compression Sack and stash it in your backpack. The four-strap design cinches the internal items down, and the lightweight siliconized  fabric slides easily into your pack.

    • Four-strap design provides compression
    • Wide range of sizes accommodates everything from jackets to sleeping bags
    • Drawcord closure is quick and secure
    • Ultralight design adds minimal weight to your pack
    • Siliconized fabric is water resistant and easily slides into your pack
    • End cap pocket stows small items or can store the compression sack when it's not in use
    • Item #ODR1072

    Tech Specs

    30D siliconized nylon ripstop, 70D TPU
    [5L] 305 cu in, [8L] 488 cu in, [10L] 610 cu in, [15L] 915 cu in, [20L] 1220 cu in, [35L] 2136 cu in
    [5L] 15.5 x 5.25 in, [8L] 17.6 x 6 in, [10L] 18.5 x 7 in, [15L] 21.5 x 8 in, [20L] 22.75 x 8.5 in, [35L] 25.5 x 11 in
    drawcord with cordlock
    Compression Type
    Claimed Weight
    [5L] 2 oz, [8L] 2.3 oz, [10L] 2.9 oz, [15L] 3.4 oz, [20L] 3.6 oz, [35L] 5 oz
    Recommended Use
    backpacking, camping
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    15L is perfect for my 30* synthetic bag

    • Familiarity: I've used it several times
    • Fit: True to size
    • Height: 5'11"
    • Weight: 145lbs

    Perfect little compression sack for my 30 degree synthetic bag. Squeezes my bag down to a great size for shoving into a backpack or even saving a little extra space in the car. Material is thin but strong and very lightweight. Straps are easy to adjust and compresses with ease. I also like the little area on the bottle of the bag to stuff in the straps so you dont have a bunch of straps flapping around.

    If you have a down sleeping bag you could get away with a size down in this compression sack for sure but for all us synthetic sleepers, the 15L is the way to go. Overall, really pleased with this compression sack, once I found the right size for my bag ;)

    15L is perfect for my 30* synthetic bag

    Great purchase!

    • Familiarity: I've used it several times

    This was the first one I've used before, I have the th 10L for my la sal sleeping bag, it's a snug fit for that but once I get it in there I can compress it quite a bit. Solid purchase. Only downfall is mine smelled like fish when I got it haha

    Solid compression, a smidge too small

    • Familiarity: I returned this product before using it

    Worth mentioning that if you are shoving a sleeping bag into this, do your research or buy a couple sizes to find which size works best with your set up. The 10L was just a little too small for my 20* synthetic sleeping bag so I opted to go up a size even though I wanted to get the smallest compression possible.

    Hi Sarah, definitely on a synthetic bag, the 10L would be too small. But that is why we sell lots of other larger sizes as well. Definitely doing the research ahead of time is a great suggestion!

    OR Rep

    @Leta, which size do you recommend for the following sleeping bags?
    1. Mountain Hardwear Bozeman Torch Sleeping Bag: 0 Degree Synthetic - Women's / Reg
    2. Mountain Hardwear Hyperlamina Torch Sleeping Bag: 0 Degree Synthetic / Reg


    • Familiarity: I've put it through the wringer

    I got this for a down sleeping bag and it works great! It is an ultra light one so be careful how hard you pull on those straps because you will rip one end or the other though. This one is not meant to tighten as hard as a rock so don't try it! Other than that it compresses as it should and is a great color. Look no farther for a UL compression sack!

    8L for clothing

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

    I bought the 8L to use for clothes and it worked great! Highly recommend these for saving space and keeping clean clothes, clean!

    A quick favorite!

    • Familiarity: I've put it through the wringer

    I picked up this stuff sack for my Marmot Tungsten 2p tent in 10L size and it fits perfectly. It fits the footprint, tent and rain fly. I have all great things to say about it so far. With it completely full, it stuffs down better than any other stuff sack I've ever owned. It is super light and the fabric they use is impressive, it's so thin but still holds up to some serious compression and abuse.

    After my experience with this stuff sack, I picked up a few more from OR for organization and space in my pack. The weight and durability of this ripstop nylon is just incredible. Highly recommend this stuff sack!

    Nice Compression Sack

    • Familiarity: I've used it several times

    Nice sack that does what its meant to do. Have the 35L for compressing bedding in our van and we were surprised how much we were able to fit and squeeze down.

    Just Right

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

    The 15L fits my REI Joule 21 bag perfectly. Draw string and straps work great and seem like they will hold up to a lot of use.

    An Essential Part of Your Kit

      I have about a dozen of these OR sacks, in all different sizes and configurations and the common thread here is that they all perform just great. This model is able to store my sleeping bag, ground pad and bivy sack and can somehow manage to compress down to a size that fits inside my 50L backpack. Sturdy construction, tough materials, and cool colors make this model and others must own products.

      Light, with sweet features.

      • Familiarity: I've used it several times

      This sack has added features that other don't, that make it really smooth to use. The closure on the draw string is really smooth, and locks it's self in place for you. Also, there are to quick releases on the compression straps, that make opening the compressed bag very fast, and east.

      Also, it's a bit see through, so you can tell what's inside.

      This bag is light. The price you pay, though, is that it doesn't hold it's shape as well as other bags. It can easy get lumpy and harder to compression. It weight is a big issue, then it's worth the extra hassle. If ease and speed is more important, I would go with a regular compression sack.

      Light, with sweet features.

      Durable and compression happy

      • Familiarity: I've put it through the wringer

      10 liter was perfect for my 20 degree down sleeping bag and a down jacket. No rips or tears and highly compressable. A good bag to get for backpacking for days on end like I just did. Very light. I would buy again if I needed too. It's a go to for me.

      Great, Gets the Job Done

      • Familiarity: I've used it several times

      Bought this for my WM Alpinlite Bag and the medium was perfect. Was able to squeeze in some other things as well like my down jacket I didnt wear that much but, wanted just in case.

      I like how you can un-clip two of the straps, makes getting the lid oriented easier as well as getting the bag out of it.

      If your curious what size you should get for your gear, let me know, just shoot me an email. I'd be happy to be your gear consultant!

      Bill Porreca

      Good for travel

        Got these compression sacks for my sister for her trip to Japan since she was only using a backpack to travel in. She used the sacks to compress her dirty laundry and heavy bulky items like her jeans and jacket. Said they work great, they are a bit heavy when compressed, but definitely saved space!

        Works just fine

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

        Well, I've only used it a couple of times now. The 15L fits my 12 degree down bag just fine and gets it down to a very small size. Overall I'm satisfied with it. I will probably update when I have used it further. The first time tightening the sack it made some scary noises near the seams I think it was, but maybe that's just a one time thing. Maybe I tightened it too much because I do have a lot of strength behind me, not sure. We will see if the seams hold up in the future. As of now the sack seems like it's pretty good quality for the price.

        hey Anthony, that sound you heard was jsut the threads in the seem doing their thing and rubbing against the fabric when you pull. No worries! I used a 10L for my 20 degree bag and it was no problem!

        Than you for writing!

        OR rep

        Oh, I love thee!

        • Familiarity: I've used it several times

        So I held off on buying a compression sack for a long time because every time I would go to buy one, I would be frustrated with how expensive they were - do I REALLY need to spend that kind of money on a sack??

        The answer is yes. OMG does it make a world of difference!! I didn't buy the waterproof one simply because this one is water resistant, and I have a cover for my backpack if it does rain. But let me tell you...I put my down sleeping bag in here with a bunch of clothing and that thing compressed down to the size of a volleyball. Saves SO much room! I originally bought the 20L one, but then I saw a sale and decided to get a 15L one as well and now I've started my collection of compression sacks. I don't only use these for backpacking - I also use them just for traveling in general and you can fit so much more into a small suitcase. Truly amazing! Whoever said "hey, let's put straps on this thing so that you can tighten it down to nothing"....I thank you.

        And at night, it's great because I use this as my pillow, although it does slip around a bit. My last trip, it was fairly warm so I left my sleeping bag open a bit, and I put this inside my mummy head so it stayed put and was comfy all night long.

        Oh, I love thee!

        What size would you suggest for an Alps Extreme 3 tent? Tent, fly, footprint.

        I have an Alps Red Creek 0 degree sleeping bag. Which compression sack size would be the most appropriate? Thanks in advance for your kind reply.

        Unanswered Question

        What size sack for Sierra Designs Backcountry 600 sleeping bag and also what size for REI 2+ half dome tent? I'm think 15L for sleeping bag and 8L for tent. Would 8L be sufficient for 3 days worth of clothing as well?

        Would 5,8, or 10L be best for my Marmot Lithium? Came with small marmot stuff sack, but not compression. Any ideas?

        The stuff sack that your Lithium came with should be 7.5x16 inches. I would recommend the 8L in this, since it will be the closest in size to the manufacturer sack. That way it will fit no problem and then you can compress it to a smaller size.

        I have the Northface Dolomite Double Sleeping bag. Regular Length. Would 15L work for that?


        At a stuffed size of 12x24in, none of these compression sacks will cut it for your needs. Something like the "ALPS Mountaineering Cyclone Compression Sack" in the XL size would be better for you, although still a tight fit.

        Unanswered Question

        What compression sack should i get i got...

        What compression sack should i get i got a Sierra Designs Mobile Mummy Reg size. 8'' x 15''

        I have a North face Aleutian 4s sleeping...

        I have a North face Aleutian 4s sleeping bag its 77" long what size should I get

        You are probably going to want to go with the 15L on that one seeing as the sleeping bags original stuff sack is about 8 x 23 inches. This will make stuffing it into the compression sack just as easy will allowing you to really get it compressed into a smaller size.

        What size should I get for a Western...

        What size should I get for a Western Mountaneering Summerlight L?

        Best Answer


        You can pull off a 5L or go up to the 8L and have plenty of room in either. Your Summerlight long stuffs at 6x12" (WM specs are XXS in the stuff sack they provide), so a little shy with the 5L in the width, but more than enough in the length. If you really need to compress your bag, that's how it is, but over time, it's tough on the down and shortens the lifespan, not to mention that it requires extra time to get the bag lofted back up before bed. My WM bags are probably the one thing I never ever compress unless I absolutely have to, and 6x12" is already a very doable packed volume to begin with. Hope this helps.