The GRAYL Ultrapress Filter is a water bottle with a built-in filter for hiking and travel. This is the bottle that allows safe drinking water wherever you're located. Just fill with dirty water, press the filter in, and drink. Super simple, and it removes viruses, bacteria, protozoa, plus filters particulates, chemicals, and heavy metals. Featuring a FlipCarry handle for toting around and a RiverFlow spout for chugging.