Compact, lightweight and fit for global use. Greyl's original water purifier gives anyone the ability to tap into virtually any freshwater source and safely drink from sketchy spigots, hotel sinks, murky rivers, wells or lakes. Protects from global waterborne pathogens (virus, bacteria, protozoan cysts), pesticides, chemicals, heavy metals. It makes clean, purified drinking water in less than 15 seconds. Purify water, anywhere.