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North Star Survival


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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 micro plastics, heavy metals, like lead, chlorine, organic chemical matter, dirt, sand, and cloudiness; improves taste
  • Versatile water filter system, can be used4ways: 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 ultra-light, the gravity water filtration systemweighs6.9oz (196g) and can filter a gallon of water in less than 10 minutes
  • Long-lasting membrane microfilter last sup to500 gallons (2,000 L); replaceable activated carbon+ ion exchange filter lasts up to26gallons (100 L)
  • This product gives back: one purchase, one child, one year of safe water.

Maximize protection and water throughput with this ultralight, compact gravity water filter system built to provide safe drinking water in almost any environment. The LifeStraw Flex with gravity bag offers advanced filtration for protection against bacteria, parasites, and microplastics in addition to lead, chlorine and other contaminants.

The gravity bag features a leak-proof hose connector and a convenient shoulder strap for easy transport and flexibility to hang virtually anywhere. It is also compact and portable, making it ideal for hiking, camping, and survival. Your purchase has impact. For every LifeStraw product purchased, a school child in need receives safe water for an entire school year.