GRAYL GeoPress One-Way Drink Mix Valve - for Electolytes, Mixes, and Flavored Drinks

COMPATIBILITY. Works with Grayl 24 Fl Oz GeoPress Replacement Purifier Cartridges (2nd generation) first sold in April 2023 that include new "core" and "flow channel" design (horizontal vents). 1st Generation cartridges are not compatible with the One-Way Valve. SIX ONE-WAY DUCK BILL VALVES prevent back flowing of water (or other beverages) through the Cartridge while also allowing clean filtered water to pass through the Cartridge into the Inner Press. ENJOY DRINK MIXES & ELECTROLYTES in your Grayl 24 Fl Oz GeoPress Filter & Purifier Bottle no matter where your adventure takes you; a feature no other drink-thru filter bottle can deliver. VERSATILITY. Also allows a GeoPress Bottle to be used with a variety of flavored drinks such as juice, bubbly water, mocktails and cocktails. DISHWASHER SAFE. Regularly wash Valve between uses to remove smell and residue left behind from powders or other beverages.