Disclosure: As an Amazon Associate, 1 Way Camping earns from qualifying purchases at no extra cost to you. The GRAYL GeoPress water purifier is a 24-fluid-ounce (710 ml) press-style bottle designed for international travel, camping, overlanding, emergency preparedness, and backcountry trips. Unlike a basic microfilter, GRAYL markets the GeoPress as a purifier engineered to address…