LifeStraw Flex with Gravity Bag

$54.99 $59.99
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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 next level 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. Ideal for hiking, camping, emergency preparedness and survival. Your purchase has impact. For every LifeStraw product purchased, a school child in need receives safe water for an entire school year.

  • Membrane microfilter removes 99.999999% of bacteria, 99.999% of parasites, 99.999% of microplastics and turbidity (silt, sand, and cloudiness)
  • Activated carbon + ion exchange filter reduces lead, chlorine and bad odors 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 | 7 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


30 day return policy - If you're not completely satisfied with your purchase, please contact us at within 30 days of purchase and we will guide you through our easy return process. Some food products and medical kits may not be eligible.


Orders over $75 ship for free. Orders under $75 ship for a flat rate of $4.99. Please allow 1 - 3 business days for processing and 4 - 7 business days for shipping, though most items will ship faster. Dropship items will be labeled as such and may take 5 - 10 business days to ship. Please contact for any questions regarding these policies.

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LifeStraw Flex with Gravity Bag
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