Outdoor Research UltraLight Compression Sack
Outdoor ResearchUltraLight Compression Sack

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
  • Reviews
  • Q & A

Great Space Saver

  • Familiarity: I've put it through the wringer

Hey this product is great. I purchased every size they make to maximize my backpacking space. I put anything from clothes to food in them and then compress it to the smallest size possible. The nicest thing about them is with clothes they provide an extra layer of waterproofing for items that can't get wet.

15L is perfect for my 30* synthetic bag

  • Familiarity: I've used it several times
  • Fit: True to size

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

Thank you for the review and photo, Sarah!

Leta
OR Rep

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

Good news, James! It will wash up well! Thank you for the review!

Leta
OR Rep

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!

Leta
OR Rep

To Leta,
Do you recommend a bag for the Marmot Never Summer? I haven't figuerd out the liters of the bag yet. It's basically a 3.25-pound down 0-degree bag.
Thanks!

To Nick: I am thinking the 20L would be ideal. 15L might be a push from a size perspective.

Thank you for the question!

Leta
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
Thanks.

Compresses

  • 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.

    Thanks Tom!

    Leta
    OR Rep

    Awesome stuff sack

    • Familiarity: I've used it several times

    I have the 10L and it just fit's my 20 degree bag. It's super light weight (compared to my other stuff sacks) and looks like it's well built. I was a little worried that it was too thin, but so far it's worked out great!

    Thanks Jason! Enjoy!

    Leta
    OR Rep

    Smash it Up!

    Two 15 degree down bags in one sleeping compartment. Pack is 70L.

    Smash it Up!

    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
    bporreca@backcountry.com
    801-736-6398

    Super light weight

      Light weight and durable. Makes puffy stuff smaller. Great product. Buy one or three.

      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!

        Fits a Warbonnet Blackbird XLC just fine

        • Familiarity: I've used it several times

        I purchased this compression bag to hold my Warbonnet Blackbird XLC hammock, and it fits just fine.

        Great Stuff Sack

        • Familiarity: I've put it through the wringer

        The bag is light, water resistant, and compacts perfectly. I highly recommend this product.

        Thanks so much, Aaron!

        Leta
        OR Rep

        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!

        Leta
        OR rep