Sawyer Two-Bag Complete Water Filtration System 0.1 Micron absolute hollow fiber membrane inline filter; includes two 4-liter reservoirs for an 8-liter total capacity Removes 99.99999% of all bacteria, such as salmonella, cholera, and E.coli; removes 99.9999% of all protozoa, such as giardia and cryptosporidium Housing material made from food grade ABS plastic is easily field maintainable Dispenses 4 liters of water in as little as 3 minutes; no residual chemical taste Backed by a manufacturer's limited lifetime warranty