Katadyn Vario - Made for camping, backpacking and travel, this water filter is a true all-rounder. As a part of the manufacturer's Back Country series it is at its best for 1-2 users. When using the Vario filter you can choose to use either two or three of its filter elements. -puhdistinta käyttäessäsi voit valita pumppaatko veden kaikkien kolmen suodatinelementin läpi (suositeltavaa kun veden laatu on huonoa) vai vain kahden (nopeampi pumppaus). - Three filter elements: fibre glass filter, ceramic prefilter and active carbon filter - Two-directional pump: you are pushing water through the filter on both up and downstrokes - With relatively clear water you can bypass the ceramic prefilter, thus reaching a higher filtering speed - With murkier water it is highly advisable to also use the ceramic prefilter. Doing this will also lengthen the fibre glass filter's life span - Up to 2 liters of clean water per minute - The bottom of the pump can be attached directly to a Nalgene b