The GRAYL GEOPRESS Purifier has unrivalled ease, speed & convenience for travellers needing to filter their water. No other portable purifier rivals the speed, simplicity and effectiveness of GEOPRESS. In eight seconds, it makes 24 ounces (710 ml) of safe, clean drinking water – anywhere in the world. Effective on all seven continents, you can tap into the world’s polluted water sources and safely drink from sketchy spigots, hotel sinks, murky rivers, wells or lakes. GEOPRESS removes global waterborne pathogens such as viruses, bacteria, and protozoan cysts while filtering pesticides, chemicals, heavy metals, and even microplastics from your water.