Grayl GeoPRESS One-Way Valve-Clear ultrapress Compatible with One-Way Silicone Valve

Compatible with One-Way Silicone Valve for electrolytes and drink-mixes

Adventure ready water purifier

our Expanse BottleDrop™ and BottleLock® storage systems offer you a multitude of options to carry any water bottle and essential gear

Lifespan will decline when filtering and purifying water with high levels of silt

Grayl GeoPRESS One-Way Valve-Clear ultrapress Compatible with One-Way Silicone ValveGive your GeoPress a boost! In April of 2023, we redesigned our Cartridges to accommodate a One Way Valve. It's a significant upgrade that includes a new "core" plus "flow channels" making it possible to add electrolytes, drink mixes and other flavored liquids into GeoPress. A 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