• Protects against 99.999999% of bacteria (including E.coli, Salmonella), 99.999% of parasites (including Giardia and Cryptosporidium), 99.999% of microplastics, lead and other heavy metals, chlorine, organic chemical matter, dirt, sand, and cloudiness; improves taste
• Versatile water filter system, can be used 4 ways: as a personal straw filter, with the included gravity bag, as an in-line filter with most hydration packs or attached to most disposable water bottles
• Compact and ultralight, the gravity water filtration system weighs 6.9 oz (196 g) and can filter a gallon of water in less than 10 minutes 
• Long-lasting membrane microfilter lasts up to 500 gallons (2,000 L); replaceable activated carbon  ion exchange filter lasts up to 26 gallons (100 L)
• This product gives back: one purchase, one child, one year of safe water