Unrivaled Ease, Speed & Convenience. No other purifier rivals the speed, simplicity and effectiveness of GeoPress. In eight seconds, it makes 24 ounces (710 ml) of safe, clean drinking water anywhere on earth. Tap into the world's water sources and safely drink from sketchy spigots, hotel sinks, murky rivers, wells or lakes. Removes global waterborne pathogens (virus, bacteria, protozoan cysts) and filters pesticides, chemicals, heavy metals, and microplastics. Also improves taste, smell, and clarity!