Lifestraw Portable Personal Water Purification Filter Survival Straws 10 Pack : Award-winning LifeStraw has been used by millions around the globe since 2005 Removes minimum 99.9999% of waterborne bacteria (>LOG 6 reduction) and surpasses EPA standards for water filters Removes minimum 99.9% of waterborne protozoan parasites (>LOG 3 reduction) and filters to an amazing 0.2 microns Filters up to 1000 liters of contaminated water WITHOUT iodine, chlorine, or other chemicalsLifestraw Portable Personal Water Purification Filter Survival Straws 10 Pack