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SteriPEN FitsAll Filter

SteriPEN FitsAll Filter - The SteriPEN FitsAll Filter effectively removes particulates from water with the use of a durable 40x40 micron screen. Its unique design, featuring the filter cup and funnel fit, offers flexibility to filter water into bottles with a wide range of mouth sizes, including narrow-mouth bottles such as commercial water bottles, soft-drink bottles, canteens and SIGG bottles. On wider-mouth bottles, such as Klean Kanteen, Gatorade and Nalgene bottles, only the cup is necessary.