GEOPRESS® One-Way Silicone Valve _tab1_geopress-cartridge-features great tasting drinking water in

great tasting drinking water in a mere 10 seconds (3L/min)

Lifespan will decline when purifying water with high levels of silt

wells or lakes

murky rivers

and makes 16

GEOPRESS® One-Way Silicone Valve _tab1_geopress-cartridge-features great tasting drinking water inA feature no other drink thru filter bottle can deliver, the GeoPress One Way Valve allows electrolytes and sport drink mixes to be added to clean purified water without compromising the integrity of the filter. Only compatible with 2nd Generation cartridges first sold in April 2023 that include a new "core" and "flow channel" design (horizontal vents).