Grayl GeoPress One-Way Drink Mix Valve

Upgrade your Grayl® GeoPress to work with your favorite electrolyte mix, add some juice to the equation or whip up a backcountry cocktail with ease. The One-Way Drink Mix Valve allows drink mixes to be combined with clean, purified water without flowing back into the filter cartridge.

• The One-Way Valve makes adding electrolytes, drink mixes, and other flavored liquids into your GeoPress easy with tool-free installation.
• Can also be used to make cocktails and mocktails anywhere, anytime.
• Six duck bill valves prevent added mixes from flowing back into the filter cartridge, prolonging the life of the filter.
• Soft silicone valve is easy to clean. Hand wash with warm, soapy water or place in dishwasher.
• To install, press the One-Way Drink Mix Valve into the cartridge until the silicone rim is flush with the topside and base of valve is flush with the cartridge floor. To remove, pinch the rim with fingers and pull.

The One-Way Drink Valve is only compatible with second-generation cartridges that include a new "core" and "flow channel" design (horizontal vents) first sold in April 2023.