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Protects against 99.999999% of bacteria (including E.coli, Salmonella), 99.999% of parasites (including Giardia and Cryptosporidium), 99.999% of microplastics, dirt, sand and cloudiness. Ultralight and durable, the LifeStraw weighs less than 2 ounces (57 g) so you can pack it anywhere. Long-lasting membrane microfilter will last up to 1,000 gallons (4,000 L) of water, that’s enough drinking water for an individual for over 5 years. Be prepared with the ultimate survival tool, the LifeStraw has an unlimited shelf life and has been tested all over the globe to face the harshest conditions. Your purchase has impact: one purchase, one child, one year of safe water