Geigerrig - In Line Filter for Hydration Packs - Virus Removes 99.9% Cryptosporidium and Giardia Improves taste, odor and clarity of filtered water Includes Miraguard Antimicrobial* Technology which suppresses the growth of bacteria, algae, fungus, mold and mildew within the filter media Rated to filter up to 50 gallons for extended adventures UQC ends built into the filter for plug-and-play connection to your Geigerrig hydration engine