Field Tested: Katadyn BeFree 1.0L Water Filter

When I first got into hiking and backpacking I would carry an MSR Sweetwater pump style water filter. This type of filters uses a lever/plunger assembly and tubing to filtrate the water through a carbon filter for drinking. While they do work really well for filtering gross dirty water in a fast manner, they are relatively bulky and heavy particularly if you’re a solo hiker or trail runner with a small pack. This eventually led me to purchasing a Sawyer Mini water filter which has become EXTREMELY popular in the hiking and trail running communities. Due to it’s tiny size and lightweight it’s become a staple of the ultralight packing list. However, it does have some downsides.

So, what other options are out there?

Katadyn BeFree 1.0L

Katadyn has taken it to the next level with their newest offering, The BeFree Water Filter. The Befree is blatantly targeting the Sawyer Mini crowd with its marketing material always referencing “the leading competitor” (Sawyer… duh!) and for good reason. The BeFree is a very small filter that is essentially built into a bottle cap. Within this assembly is a standard hollow core filter (same technology as sawyer) that helps remove all the microorganisms and bad stuff.

Let’s look at the nitty gritty details.


  • Dimensions: 9.05″ (Uncompressed)
  • Diameter: 2.73″ ∅
  • Output: 2 Liters/min
  • Lifetime: 1000 Liters
  • Technology: Hollow fiber filter 0.1 micron
  • Claimed Weight:2.05 oz


The Katadyn BeFree is extremely lightweight and packable. Katadyn claims it weighs 2.05 ounces… it came in at 2.15 ounces on my scale. Which is still lighter than the competition. The flask that comes with the Katadyn BeFree comes in two sizes. .6L or a full 1.0L. I opted for the larger 1 Liter flask. This flask is very pliable and can squashed down to a very small package for throwing in a vest pocket on the go.

The Filter is made up of three major components. The flask, the filter cartridge, and the cap. The filter cartridge screws into the flask on a 42mm thread (common size for hydrapak products). On the other end of the filter cartridge is a standard “soda bottle” type thread which the cap is threaded on to. The supplied cap is “sport type” which is similar to a smart water type flippy cap.

The Katadyn Befree Filter Cartridge with cap removed.

The fact that the filter has a soda bottle thread opens up a world of opportunity since the competition uses the same design. I was able to purchase a Sawyer “Fast Fill Kit” and adapt it to the BeFree filter. This has worked AMAZINGLY well for quickly filling up my hydration bladder while on the go… More on this later. The soda bottle thread is also nice to have when you want to throw the flask in your pack while its full. Simply replace the flippy sport cap with a standard soda bottle cap and you don’t have to worry about leaks.

The Katadyn BeFree filter features a 2 liter per minute flow rate. This is the biggest selling point to this filter. It simply blows the competition out of the water. The only caveat to this is that it has a far shorter lifespan of 1,000 liters before you’ll need to toss it and buy a new one. In my opinion, 1,000 Liters is more than enough!


The Katadyn BeFree water filter could not be easier to use. Simply fill up the flask in a stream, screw on the cap, and drink. In practice it works really well and the water tastes great. The flow rate of this filter is so high that water literally just dumps out of it with very little effort.

My “fast fill” set up on a Mountain Hardwear Race hydration vest. Connected directly to the hydration bladder tube.

With the addition of the Sawyer “Fast Fill Kit” I was able to splice a connection into my hydration bladder tube that allows me to connect the BeFree directly to my hydration bladder without removing it from my pack. This setup is incredible! I can whip out my BeFree Filter, detach my bite valve, fill up the flask, connect it to my hydration tube, and feel the hydration reservoir on my back inflating with clean water while I squeeze it through the filter. This saves valuable time on the trail.

Filtering some water along the Flume Slide trail directly into my Ultimate Direction running pack via the Fast Fill kit.

The wide mouth flask makes scooping water from standing water, and collecting drips very easy. I also like the material used on the flask, it’s a rubbery stretchy squishy kinda thing that feels very durable. The flask features a stiff area around the threads that help keep it propped open while filling. When the filter becomes contaminated, or dirty enough to slow the flow rate cleaning is easy. You simply fill the flask with clean water, and shake. The shaking motion removes dirt and debris from the fins of the filter cartridge.

Katadyn BeFree versus Sawyer Mini

Katadyn BeFree (left) Sawyer Mini (right)

Battle of the titans! Which do you buy? I guess it boils down to how often you plan on using the filter and how much money you want to spend. Let’s compare!

Flow Rate: The Sawyer Mini offers a 1/2 Liter / Minute flow rate. While the Katadyn BeFree boasts a 2 Liters/ Minute flow rate. This is a BIG difference and in the field this is probably my favorite feature of the Katadyn BeFree. Instead of wasting valuable time I can get back on the trail.

Weight: The weight between the two filters is negligible. On my scale the Katadyn BeFree weighs in at 2.15 ounces and the Sawyer Mini at 2.35 ounces with the flask included.

What they filter: Both the Sawyer Mini and the Katadyn BeFree offer 0.1 Micron absolute filtering. This means that they are both effective against harmful Bacteria, Protozoa, E. Coli, Giardia, Vibrio cholerea, Salmonella Typhi, Leptospirosis, and cryptosporidium.

Included Bag/Flask: The bag/flask that both are supplied with a drastically different. Sawyer provides a laminated bag bottle while Katadyn provides a Hydrapak flask. The Hydrapak flask is far superior in every way imaginable. It’s more robust, easier to fill, easier to clean. I also like that it’s clear so you can get a visual on the “dirty water” before your filter it. The Sawyer bag has a reputation of fatiguing to the point of leaking over time along the glued together edges.

Cleaning: Both filters can be cleaned in the field if they become gunked up. However, the Sawyer Mini requires the use of a syringe to backflush. The Katadyn BeFree can be cleaned simply by shaking clean water inside the flask.

Sawyer Mini weighing in at 2.35 oz

As you can tell, I’m partial to the Katadyn Product… however, there are a few key areas where the Sawyer Mini has the upper hand.

Price: This is a big one. The Katadyn BeFree filter retails for $39.99 (.6 Liter) and $44.99 (1.0 Liter). The Sawyer mini can be purchased for $17.99 and can often be found on sale.

Reputation: While Katadyn has been making filters for a long time. This is their first foray into ultralight minimalist style filters. Sawyer has been selling the Squeeze and Mini filters for years.

Adaptability: The proprietary 42mm flask thread on the Katadyn BeFree filter could be a limitation to some. If you’re thru hiking and your “dirty bag” is damaged it’s nice to be able to quickly replace it with a soda bottle from a convenience store. Sawyer uses standard threads that can commonly be found just about anywhere.


The Katadyn BeFree filter is a welcome addition to the water filtration market. This is a fantastic option for thru hikers, trail runners, and ultralight backpackers. I’m a big fan so far and plan to continue using the filter on my hikes and runs for quick water resupplies. The price is a little steep, but I think the excellent build quality and high end included flask justifies the price.

When compared with the Sawyer Mini I have to say that the Katadyn BeFree is a far superior product in just about every way. Except of course price. But for something that needs to be replaced every 1,000 Liters I think I can afford to spend a little extra up front. At the end of the day though, both products will offer clean drinking water that won’t make you sick.

So what do you think? Which are you buying? Let me know in the comments below!


  • Susanna Sousa

    April 24, 2019 at 8:49 pm

    Thanks for this great review! It was exactly what I was looking for. I’m going out on a two week backpacking trip and looking for a way to quickly filter my water, and I am between the Sawyer and the BeFree. In the past I’ve used Chlorine Dioxide drops, but I want to start filtering and use Chlorine as a backup this go-around. I see this post was from two years ago (I must be running behind in the game haha) what were your final conclusions regarding durability of the BeFree 1L? I’ve seen mixed reviews about leaks springing up rather quickly. What was/is your experience with that? Thanks!

    • Dave Dillon

      April 26, 2019 at 2:12 pm

      Hi Susanna thanks for reading the blog! The 1L Befree held up great for me. I actually still use it a year later. I have also seen reports of filters blowing out and bottles deteriorating but that hasn’t happened to me… still a great filter! Hope this helps.

  • Larry Ross

    December 15, 2017 at 4:44 pm

    I just ordered this and will update when it is tested. But on the surface this is the solution I’ve been waiting for. I wanted to love the katadyn befree but its use of a propriety 42mm thread completely limits its use with other bottles, and it cannot be added inline for hydration packs or gravity systems (although you can create a gravity system using the proprietary bags from Hydrapack. The lifestraw flex can be used online just like the Sawyer mini, but with the added benefit of the Charcoal filter to treat the taste of the water. This also has a higher flow rate than sawyer, and other lifestraw products are known to clog less than sawyer. Lastly, this one comes with a squeeze bag where the filter installs internally inside the bag similar to the befree but without the befree thread limitations. All in all this is looking like the solution I’ve been waiting for.

  • Mark

    August 16, 2017 at 12:41 am

    I’ve heard some complaints concerning durability/longevity. How many trips have you taken this on, and have you noticed any issues at this point?

    • Dave Dillon

      August 16, 2017 at 1:51 am

      Hi Mark. Thanks for reading the review! So far so good! The BeFree has held up through 8 or 9 big trail running trips and uses. If anything changes as far as durability or failure I’ll be sure to update my review!

  • Northeast Alpine Start

    July 5, 2017 at 11:21 am

    Nice review! I’ve usually get by with a 100 oz bladder and carry iodine tablets in my first aid kit for emergencies but it would be nice to be able to quickly treat water on long mileage missions… could also save weight if water sources were common I could just carry one bottle… I think I’ll try this out, thanks!

    • Dave Dillon

      July 5, 2017 at 11:37 am

      Agreed, having some iodine tabs is an excellent backup plan in a pinch. I mainly use these mini filters for big missions like a Pemi Loop, or long unsupported trail runs. When carrying enough water for the entire trip is nearly impossible and not weight efficient. They’re great for camping too. Thanks for reading!

      • Charles Miles

        August 16, 2017 at 10:40 pm

        Iodine tablets? Talk about old school, not only is iodine a toxin and bad for you, but it is totally ineffective on Cryptosporidium Cysts (the test bug for the EPA registration). Your best back up would be Chlorine dioxide tables, but the filter immediately gets rid of Protoza & Bacteria.
        “a bit expensive?” $40 for a piece of safety gear that as you say is far superior. How much do you spend on Craft beer these days? My Sawyer has been a big disappointment over the years and now we have he next generation which is well worth the price. Has my Uncle would say, “cheap is expensive!”
        Like the adaptor to hydration bladders.
        Hike on Safely!

        • Dave Dillon

          August 17, 2017 at 3:09 pm

          Thanks for reading Charles! I’d only carry Iodine or Chlorine as a backup. The cost being “expensive” is all relative to the competitive market. However, I’m happy to pay up for the flow rate alone. So far this filter has been my best friend!

    • Dave Dillon

      July 5, 2017 at 11:14 am

      Hi Wes, youre right. I left out what they filter because I mention that the BeFree is rated to filter at 0.1 Microns absolute. Both the Sawyer and the BeFree are 0.1 Micron filters which means they are effective on Bacteria, Protozoa, E. Coli, Giardia, Vibrio cholerea, Salmonella Typhi, Leptospirosis, and cryptosporidium. Ill add this info to the article. Thanks for the input!


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