Sawyer 2 Liter Complete Water Filtration System

If you like using a water bladder, this setup is for you. Its like Swiss Army knife of filtering. The specs on filter itself- at 0.1 microns
Weight: 1.8 ounces
Flow Rate: up to 40 PSI
Removes: Bacteria and Protozoa
Life Expectancy: 1 Million Gallons

Biological Filtration: removes 7 log (99.99999%) of all bacteria like salmonella, cholera, and E. coli. And 6 log (99.9999%) of all Protozoa such as Giardia and Cryptosporidium. You will find these removal rates to equal or exceed competitive options. Therefore Sawyer offers the highest level of filtration available.

Truly impressive, and if you have the need for something that will stop viruses, Sawyer has one of the only mechanical virus filter in the business.