Description Protects against bacteria, parasites, microplastics, lead and other heavy metals, chemicals including chlorine, organic chemical matter like pesticides, and herbicides, dirt, sand, and cloudiness while removing odors to improve taste Features Removes 99.999999% of bacteria (including E.coli, Salmonella), 99.999% of parasites (including Giardia and Cryptosporidium), 99.999% of microplastics, silt, sand, and cloudiness Reduces lead and other heavy metals, chlorine, organic chemical matter, and bad odors for improved 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 Specifications Membrane microfilter removes 99.999999% of bacteria, 99.999% of parasites, 99.999% of microplastics, silt, sand, and cloudiness Activated carbon + ion exchange filter reduce heavy metals like lead, chlorine and odor for improved taste  Meets NSF 42 standard for chlorine reduction Meets NSF 53 standard for reduction of lead Meets US EPA & NSF P231 drinking water standards for the removal of bacteria and parasites Membrane microfilter lasts up to 500 gal | 2,000 L; pore size: 0.2 micron Activated carbon + ion exchange filter lasts up to 26 gal | 100 L Filter Size: 6.4 x 1.5 in | 22.9 x 2.5 cm Hose Length: 27.5 in | 70 cm Gravity Bag Volume: 1 gal | 3.7 L Gravity Bag Size: 18.7 x 10.6 in | 47.5 x 27 cm Weight: 6.9 oz | 196 g  Flow Rate: 0.125 gal/min| 0.5 L/min BPA-free materials Replaceable filters & parts Includes: LifeStraw Flex filter, 1-gallon gravity bag, quick-connect hose, and backwashing syringe LifeStraw Flex with Gravity Bag