When your travels take you somewhere far away from established paths, you don't need a lot. But clean water is an essential you cannot live without.
Drinking from lakes and streams is not generally recommended. But if you have LifeStraw Steel you can directly put it into the water and start drinking. The two step filtration system with a special hollow fibre technology turns dirty water into clean water.
Inside 99.99% of all bacteria and parasites as well as dirt are filtered. The drinking straws pores are only 0,2 micrometers wide. A human hair is 500 times bigger.
The mechanic filter system in combination with a built in active carbon filter cleans the water so thoroughly that it passes the USA EPA drinking water standards. The active carbon filter is in an exchangable capsule. After cleaning 100 liters of water from bad taste, chlorine and organic chemicals, you exchange it for a new one. The hollow fibre filter works for up to 1000 liters of water.
There are no chemicals, batteries or BPA in this product, so it passes the EU guidelines 10/2011 and 1935/2004 regarding materials that are in contact with food.