The Frontier Pro Ultralight water filter is essential gear for every survivor’s gear pack. This filter is only 6 14″ overall, featuring gray composition housing with a protective black rubberized overmold, Bite Me Valve and Cap Strap (keeps cap attached), The new replaceable Series III GRN Line filter removes bacteria, Cryptosporidium and Giardia. Easily connects and adapts to bottles, bladders and gravity flow systems. Light/Compact: 2.5 oz portable protection. Pre-Filer: 3 replaceable pre-filters remove particles before filtration and Miraguard. Antimicrobial Technology: suppresses the growth of bacteria, algae, fungus, mold and mildew within the filter media. GRN Line Bacteria Protection: Bacteria Removal: _ 99.9999%, Cyst Removal: _ 99.9% (Meets or exceeds ANSI/NSF 53). Chlorine, Chemical, Taste and Odor Removal: (Meets or exceeds ANSI/NSF 42). Includes replaceable Series III GRN Line Filter with 28mm base, Removable End Cap with UQC Connector, Valved UQC Tube Connector, (3) Replaceable Pre-Filters and 5″ Drinking Straw. Filters 50 gal. BPA Free. Iodine Free.