Gravity BeFree 3.0L Water Filtration System | KatadynThe Katadyn BeFree 3L water filter packs up small and compact. Redesigned to be even more compact and easily maintained, the Katadyn BeFree 3L water filter provides up to 2L per minute in flow rate, and the ability to safely purify water removing bacteria and protozoa. The 0. 1 micron hollow fibre is easily cleaned by swishing in water, and the BPA free see through bag provides volume markings, and can be folded and rolled making the filter eminently