Tipping the scale at just 1 pound, the MSR MiniWorks EX Purifier System is a lightweight yet powerful water filter designed for long-term backpacking and globetrotting. This compact and easy to use pump filter employs a ceramic carbon core to filter out bacteria and protozoa, as well as funky tastes and odors. This bad boy filters at a speedy 1L per minute and you can even screw the output directly onto wide mouth water bottles. This complete system includes the pump filter along with Aquatabs® purification tablets for extra defense against viruses in the sketchiest of locales.