Aquamira Frontier Pro Ultralight Water Filtere. The Frontier Pro has earned the stamp of approval from ultralight backpackers, preppers and survivalists alike. Minimal weight, quality design and maximum connectivity are the signature features of this filter. ---Improved Filter: New replaceable Series III GRN line filter removes bacteria, Cryptosporidium and Giardia. ---Connectivity: Adapts to bottles, bladders and gravity flow systems. ---Light/Compact: 2.5 oz of portable protection. ---Pre-Filter: 3 replaceable pre-filters remove particles before filtration. ---Miraguard Antimicrobial Technology: Supresses the growth of bacteria, algae, fungus, mold and mildew within the filter media. --Bacteria Removal: >99.9999% --Cyst Removal: >99.9% --Chlorine, Chemical, Taste and Odor Removal. --Meets or exceeds ANSI/NSF 42 USA