Removes bacteria & parasites: The microfiltration membrane removes 99.999999% of waterborne bacteria (including E. coli and salmonella), and 99.999% of waterborne parasites (including giardia and cryptosporidium) Removes microplastics: Removes the smallest microplastics found in the environment (down to 1 micron), and reduces turbidity down to 0.2 microns Rigorous Testing: All claims are verified with laboratories using standard testing protocols set by the US EPA, NSF, ASTM for water purifiers Long Lifetime: The microbiological filter will provide 4,000 liters (1,000 gallons) of clean and safe drinking water with proper use and maintenance Make an Impact: For every LifeStraw product purchased, a school child in need receives safe drinking water for an entire school year.BPA Free materials