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Gravity BeFree 6L Microfilter

5 out of 5 stars
10 Reviews
Color:One Color



Why We Like The Gravity BeFree 6L Microfilter

The Gravity BeFree 6L Microfilter is simple and easy to use. We fill it up in our nearest stream, hang it on the closest tree or the back of our car, and let gravity do the work. It cleans water fast with its proprietary flow technology, letting us get back to doing what we want to sooner.


  • Simple dry-bag style water filter for overnight trips
  • 6L size is great for you and a friend
  • Ultra Fast Flow technology provides a rampant 2 liters per minute
  • Sediment trap promptly traps dirt to stop backflush hassle
  • Easy to clean in the field, just have to give it a shake
  • Quick-release hose works on most of your bladders
  • Item #EXTG05H
[waterbag] nylon
bacteria, cysts, sediment
hollow fiber filter 0.1 micron
Pore Size
.1 micron
Cartridge Life
Field Cleanable
9.6 x 8.5 x 2.3in
Claimed Weight
Manufacturer Warranty
1 year

Overall Rating

5 based on 10 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 0 reviews
5 Stars - 10 reviews

What do you think about this product?


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5 out of 5 stars

January 27, 2024

Water, Filters, and Bags! Oh My!

The Katadyn Gravity BeFree 6L Microfilter is certainly a mouthful to say. However, while it may be a vocal exercise, it also provides mouthfuls of refreshingly filtered water. I had the benefit of taking this product while backpacking and camping with family and friends. Unbeknownst to me, my friends had brought two other gravity filters with them. This allowed me to directly compare this product with two styles and brands. In brief, due to the Katadyn’s filtration speed, ease of cleaning, and ease of refilling this filter became the primary, and eventually, only filtration system we used. I had no issues with the product. It is light and easy to pack tightly in my backpack. Even though this product is a little more expensive than some alternatives, it is definitely worth it. You won’t regret buying this product and you will never look back.

Josiah M

Originally reviewed on

5 out of 5 stars

October 17, 2023

Super fast and easy

I've only done an at home test so far, but I am really impressed.

Lauren B

Originally reviewed on

5 out of 5 stars

September 22, 2023

Platypus Replacement

Loved my 3L platypus gravity works. Eventually got clogged up. One thing I didn't like about it was having to backwash the filter to clean it out and it never worked very well and was time consuming. The ability to removed the filter and swish it in the water is a game changer. Overall I like the design of this better than Platypus. I realize now I should've always chosen a 6L bag. Nice either solo or in a group. Just fill it up once and have clean water for the rest of the evening and into the morning with minimal weight addition. Was nervous to replace my platypus because it's always ranked high on lists, but have been very satisfied with this filter. I'll see how it's running a few years from now.

Colin S

Originally reviewed on

5 out of 5 stars

August 30, 2023

Simple design and very effective for groups in the backcountry. This packs down to a reasonable size to fit in a backpacking pack, and takes all the headache out of clean water in the backcountry.

Matt P

Originally reviewed on

5 out of 5 stars

July 14, 2023

We use this for backpacking and it works great. Simply dip the bag in some water, roll the top and off you go. The water flow leaves a bit to be desired, however the filter and hanging system are fantastic. Any first timer could use this with ease right out of the box. I found it a super simple setup, just assemble, clean and hit the trails. I would recommend buying a spare filter cartridge in case of emergency.

Austin N

Originally reviewed on

5 out of 5 stars

July 10, 2023

Base camp water

Easy peazy like other katadyn products. Great for a backpackers camp/base camp. Your buddies will stop filtering water though, be aware. Make sure they carry some extra whiskey for you.

Mike M

Originally reviewed on

5 out of 5 stars

July 3, 2023

Love this thing for my solo or group long range movements. Had the older style for a couple years and recently picked up the new version. Great flow, light weight and durable to last.

Blake V

Originally reviewed on

5 out of 5 stars

November 28, 2022

Great at camp! When we went backpacking with friends, this was the best addition to our equipment. It worked so well, a little awkward to do alone, but maybe I just need to work on technique!

Anne J

Originally reviewed on

5 out of 5 stars

November 22, 2022

Large and In Charge (of all your water needs)

Super easy to fill, very fast filtering. Easy to clean with just a little shake. The 6L only weighs a little more than the 3L and is much easier to fill. I prefer bringing this big one instead. (the material is also more durable it appears). Perfect for a bikepack or providing water for a group. Expert speed, novice simplicity.

Vince G

Originally reviewed on

5 out of 5 stars

November 3, 2022

A very useful and dependable filter

Ive used this filter on at least 20 days of overnight camping/hunting. I previously had the 3 liter which was a thinner material and was prone to getting pin holes if you werent super careful. This one you can hang just about anywhere or lay on the ground elevated if no trees around. good for a beginner or expert. After filling your nalgenes or bladder you can use this as extra storage to haul back to camp. As with any filter, dont just scoop up a bunch of dirty water or youll clog your filter. This one is easy to shake in water to clear a little but its still never going to flow like new after that.

Roger S

Originally reviewed on