Continue to have safe drinking water anywhere, anytime with the LifeStraw Go Replacement Filter. LifeStraw Go Water Bottle filters are made to filter 1,000 liters (264 gallons) of water, but you can stay prepared with replacements on-hand. By filtering down to 0.2 microns, these 2 oz. filters remove 99.9% of waterborne protozoan parasites, 99.9999% of waterborne bacteria, and reduce the liquid’s cloudiness to give you water that’s clear, clean, and safe to drink. To prevent an unpleasent aftertaste, LifeStraw does not use iodine or iodinized resin.