Aquamira Frontier Flow: Filtered Water Bottle New ergonomic, "no-tip-to-drink" bottle Meets or exceeds nsf/ANSI Standard 42 for Chlorine, taste and odor reduction Economical: one replaceable filter is equivalent to 640 20oz. Plastic water bottles Filter removes chlorine, bad taste, odors and bacteria Treats up to 100 gallons of water Miraguard Antimicrobial Technology prevents growth of bacteria and mold inside filter Ergonomic design fits comfortably in hand and easily in bicycle cages 25 fl. oz. capacity