Features:

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
Independently lab tested, durable and BPA-free
Every fill avoids single use plastic bottled water!

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Details:

LifeStraw Flex is a 2-stage water filter that exceeds the NSF 53 drinking water standard for reduction of lead also reduces chemicals and removes bacteria and parasites. It can be used in 5 different ways: as a personal straw, with the, included soft-touch bottle, or attached toa plastic water bottle, hydration bladder or as a gravity filter.

Stage 1: Hollow fibre membrane filter removes 99.999999% of bacteria (E.coli, etc.) and 99.999% of protozoa (Giardia, Cryptosporidium, etc.). Lifetime: 2,000 liters (500 gallons)

Stage 2: Replaceable activated carbon fibre capsule reduces lead and chlorine, improves taste, reduces bad odour and organic chemical matters. Lifetime: 100 litres (25 gallons)

Benefits:

Protects against 99.999999% of bacteria (including E.coli, Salmonella), 99.999% of parasites (including Giardia and Cryptosporidium), 99.999% of microplastics, heavy metals including lead, chlorine, organic chemical matter, dirt, sand, and cloudiness; improves taste
Versatile water filter system, can be used 5 ways: as a personal straw filter, with the included squeeze bottle, with a gravity bag, as an in-line filter with most hydration packs or attached to most disposable water bottles
Compact and ultralight filter and 22 oz (0.7 L) squeeze bottle weighs 3.15 oz (89 g) and hasan easy-to-fill wide opening
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 protects against 99.9999% of bacteria, 99.999% of parasites, 99.999% of microplastics, dirt, sand, and cloudiness
Activated carbon ion exchange filter protects against 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 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