Enhance your hydration experience with the Grayl Geopress Replacement Cartridge. Redesigned in April 2023, this purifier cartridge features a new core and flow channels, making it compatible with a One-Way Valve for electrolytes and flavored drinks. This unique feature allows you to replenish lost electrolytes and stay hydrated efficiently. The cartridge is engineered to last up to 350 cycles, ensuring long-lasting protection against waterborne pathogens and impurities. Redesigned in April 2023 with a new core and flow channels Compatible with One-Way Valve for electrolytes and drink mixes Lasts up to 350 cycles or 250 liters Removes 99.99% of viruses, 99.9999% of bacteria, and 99.9% of protozoan cysts Filters particulates, chemicals, and heavy metals Improves taste, smell, and clarity of water Chemical-free and BPA-free materials Designed in the United States Technical Features Active Technology: Electroadsorption and ultra-powdered activated carbon Compatibility: Works with GeoPress