Seychelle 1-10603-HI-FC-Sey 28 oz Extreme RAD/ADV Flip Top Filter Bottle-BPA Free-Removes up to 99.99% of chlorine, chemicals and heavy metals; and up to 99.9999% of bacteria and virus- Laboratory tested and environmentally safe Perfect for Emergencies-BPA Free! Removes up to 90% Fluoride Delivers up to 100 gallons of great-tasting, clean water before they need to be changed.