"This carousel displays a list of buttons that updates the main product image when a button is clicked"
Outdoor Research - AirPurge Dry Compression Sack

Outdoor Research AirPurge Dry Compression Sack

30% Off
$34.96 - $44.21 Original price:$58.95
Changing the size selection, or changing the selected color after selecting a size, may change the associated price

Select Style & Size

Select options
  • Select options
    • Pewter, 10L
      sale $34.96
    • Pewter, 15L
      sale $36.36
    • Pewter, 20L
      sale $38.46
    • Coyote, 35L
      sale $44.21



    Tech Specs

    nylon (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
    waterproof roll-top
    [5L] 15 x 5.5 in, [8L] 18 x 6.5 in, [10L] 21.5 x 7 in, [15L] 24 x 8 in, [20L] 25 x 9 in, [35L] 29 x 10 in
    Claimed Weight:
    [5L] 3.2 oz, [8L] 3.6 oz, [10L] 4.5 oz, [15L] 5.1 oz, [20L] 5.7 oz, [35L] 6.6 oz
    Recommended Use:
    backpacking, camping
    Manufacturer Warranty:

    AirPurge Dry Compression Sack

    Air valves make a compression sack bulky and hard to handle, so the geniuses at Outdoor Research came up with a better way. Instead of valves, the AirPurge Dry Compression Sack uses a section of air-permeable fabric that allows air to evacuate from the inside out without letting water from the outside in. All you have to do is fill this compression sack with gear, close it, and cinch it down until all the air escapes from inside. Your gear takes on a nice, compact form and it's protected from rain at camp or a torrential downpour on the trail.

    • Compression sack sized and shaped to fit in backpacks for trekking
    • Air permeable paneling makes this sack easier to compress than most
    • Fully sealed seams prevent water from seeping through the fabric
    • Roll-top closure ensures a watertight seal

    Perfect size for Coper Spur UL4

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

    Needed a water proof bag to keep our Coper Spur UL4 tent in. This fits perfectly. Very happy with it so far.

    Stuff Sack Win!

    • Familiarity: I've put it through the wringer

    This worked perfect for me to put my changes of clothes and layers in for week long backpacking trips. It's rolled out of our tarp shelter a few times in the rain, and my clothes were dry (maybe cold) the next morning. The compression feature especially came in handy when packing up and minimizing space used. Very satisfied with this piece of gear!

    Thank you for the review, Heather!

    Happy Trails,
    OR Rep

    A great option for hauling gear

    • Familiarity: I've put it through the wringer

    I've had great luck with this stuff sack. I frequently take outdoor trips with 20-30 high school students and we give these out for sleeping bags and clothes. We've yet to have any problems with them whatsoever. They cinch down really well and our gear seems to always stay dry. I will agree with other reviewers that the webbing can seem a little flimsy, but that seems like a good trade-off considering the weight savings. Lastly, the OR brand, and its warranty, is definitely a positive factor!

    Great to hear - thank you Jamie!

    OR rep

    Light and Tough

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

    Bought this after Terry's review for our two sleeping bags. Dry run in the house worked fine. Four straps with the main closure on top works well. Looking forward to the field test.

    UPDATE: So, after having initial success with my first sack, I purchased a second of the 35L to use as water protection for a sleeping bag and camp clothes in each. Did an over-nighter in the Narrows at Zion and when I went to pull one of them out of my backpack, I noticed it had ripped at the edge of the compression cap. I don't think water would have penetrated the storage portion of the bag, but I didn't get submerged enough to know for sure. When I went to repack it in the morning, I was afraid it would continue the tear, so I did no™t add the clothing. The other bag did not have any issues. Perhaps it was just a one off?

    Thank you, Beatriz!

    OR rep


    • Familiarity: I've used it several times

    I've only had this bag for a few weeks, I've been using it to transport a down sleeping bag while ski touring.

    First of all, I have the 15L, and the shape of this particular dry sack is too long and skinny; my sleeping bag keeps getting stuck before I get it all the way to the bottom. This probably isn't an issue if you are putting smaller items (e.g. jacket) in the bag.

    Second, the bag has already ripped. While stuffing it I accidentally grabbed the webbing on the side and one of the bar tacks ripped out.

    Not super pleased. I have gone back to my indestructible Sea to Summit rolltop.

    Hi Maia, This is so unacceptable to OR. and to me. I am so sorry that you had this issue, and I have never heard of this happening with any of our gear bags before. So unfortunately, it happened to you! Would you please reach out to OR so they can send you a new one? Maybe we can get you a larger size?

    OR has an Infinite Guaranty, and I promise you, they will take care of you. If they do not, you have me, and I will follow up. We want to make it right.

    Thank you for letting me know!

    OR Rep

    I'll certainly reach out to OR. If it was a defect or a design flaw I would love for them to get that data. Thanks for being responsive!

    EDIT: I got in touch with OR and without question they promptly offered not only to make it right, but to send me a different product if I didn't want this one anymore. They really stand by their products, and I would buy again from them for sure.

    Perfect for me

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

    I only looked at OR because I had an OR stuff sac that I finally wore out after 25 years. I bought the 35L for my sleeping bags. If you can't get two sleeping bags in this sac, you need new bags. I was able to get my Blue Kazoo and Sawtooth bags in this sac with room for a large sweatshirt and heavy flannel. As far as the compression straps, just cinch them snug one at a time and you won't have an issue, I sure didn't. The top has some sort of a band in it that helps immensely when folding it down and clipping it. So far, I love this sac.

    Great review terry!

    They Work Great

    • Familiarity: I've put it through the wringer

    We have 4 of these bags. 2- 15L and 2- 20L. 15L bags worked great on grandsons 15 degree Eureka Cyprus youth mummy bag, but was just a tad small for our 0 degree Eureka Kaycee long mummys. We made them work but wasn't worth the fight. 20L bags worked much easier. 15L bags were different generation and made of slightly different/thicker material and were very durable as we carried them on the outside, bottom of our packs. Time will tell on the new material. Compression works great though and can squeeze bags to a fraction of their size. We sit on the bags and really torque on the straps. Haven't torn one yet.

    Excellent product!!!

    • Familiarity: I've used it several times

    Used this on my trek to Machu Picchu and it was perfect for storing and compressing my clothes and saving room in my pack. Highly durable and would most definitely recommend this product. I got the 8L to pack two pairs of socks, board short, 1 pair of pants and a under armour shirt heat gear shirt and I had room to spare on the 4 day trek.

    It works

      I bought this compression bag for its shape. I'm pretty happy with it, I use it for my tent and it seems to have held up so far

      Thanks, Adam!

      OR Rep

      Better than Sea-to-Summit, if fragile

      • Familiarity: I've used it several times

      This sack has a couple advantages over the Sea-to-Summit models. First, the air-permeable material is towards the bottom but not at the bottom of the bag. This lets you get out more air when you're packing and compressing. Second, it doesn't use the flap method, which adds material and difficulty packing. On the OR model, you simple roll down the top and compress, and don't have to worry about the flap flapping around.

      As a bonus, the coyote color works a lot better than orange if you're in the military and want to use it for work instead of bulky wet weather bags.

      My only problem is -- even though mine hasn't torn -- if I'm packing it tight I do so very very carefully because the straps and material just seem fragile.

      Hey Josh - thanks for the great review. Not designed for fragility, though! Go ahead and stuff it out, and if anything ever happens to it, OR stands behind every product with an "Infinite Guarantee; Outdoor Research Products Are Guaranteed Forever."


      OR Rep

      good compression sack

      • Familiarity: I've put it through the wringer

      I use this for my 4 part sleep system mummy bag. It works great, doesnt add a lot of weight and has held up well.

      Compression Strap Tore in the Field

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

      Was looking to save some room in my pack by compressing my sleeping bag, but when I went to sinch the straps, the bag tore at the seams. Will stick with sea-to-summit here on out. I should have never strayed. I was a little suspect of the durability of the product before use...light weight but cheap! Mouth was plenty wide for a down sleeping bag.

      Compression Strap Tore in the Field

      That is unfortunate. Send it back for another, it sounds to me like a rare defect. I have used one of these for years and never had anything rip or tear. Super water proof for a compression sac

      That is unfortunate.  Send it back for another, it sounds to me like a rare defect.  I have used one of these for years and never had anything rip or tear.  Super water proof for a compression sac

      I love technology like this.

      • Familiarity: I've put it through the wringer

      Air goes out and water stays out. Awesome stuff. I've got a slew of different sizes used to stuff sleeping bags and some clothes just in case. Take your time working the compression straps and it works perfectly. Act a fool and pull on them all crazy without doing a nice job and I can see why some could become frustrate. Do it right the first time. Didn't the teacher with the paste say that?

      Tough to Stuff the L and XL

      • Familiarity: I've put it through the wringer

      We brought these on a trip this spring and the small opening at the top of the stuff sack makes it very difficult to stuff larger items in there such as a tent fly, even though we had the xl size. Compared to my Sea To Summit eVent sack this gave us trouble every time we had to use it. Definitely waterproof and durable just wish the opening at the top was wider and the bag itself . It did work out awesome in the S size for extra layers just would not try to get an XL again and put big items like a sleeping bag in it.

      I've used both the sea-to-summit sack and also this OR sack. I have the XL and i have no problems stuffing my 0 degree mummy long in there. I honestly didn't notice if the opening was smaller, it didn't seem to be an issue.

      Great stuff sack performance

      • Familiarity: I've put it through the wringer

      I have used this in various ways since i bought it a little over a month ago it has been in a kayak,backpack, trunk of a car and roof box. The material seems thin and easily ripable but it hasn't yet and if it was going to it would have with my abuse. really light great compression whats not to love. I have both this and the Sea to Summit e-vent and both are good however the Sea to Summit is easier to use in the beginning with compression system around the outside however I found that I haven't touched it in over a month


        I never used the air tight compression sacks, I always used just a "how tight can you pull the straps?" sack. I borrowed a buddies Sea to Summit sack and I was sold on that style, when I went to purchase it, it wasnt available in the size i needed for my 0degree mummy. Purchased the OR sack instead and I couldn't be happier. from now on, its the only way to pack my sleeping bags. you will be amazed at the compression ability of these sacks. They squeeze out all the air, then you roll and buckle the top to basically vacuum seal your sleeping bag. it seriously cut my stuff sack size by at least 25% over my old slumber jack stuff sack.

        What size did you get for your sleeping bag? I have the 10, and it is the bomb. I put all of my clothing for the weekend in it....so we can leave room for the charges...kids....