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The LifeStraw Flex provides added versatility and protection while continuing to be extremely lightweight and long-lasting. The 2-stage filter protects against bacteria, parasites, and micro-plastics while also expanding protection against lead and some chemicals. The product is ideal for hiking, camping, and emergency preparedness/survival. 

Product Features

  • Kit includes: LifeStraw Flex filter, 22 oz soft bottle and backwashing syringe for cleaning
  • Filtration technology: Hollow fiber micro-filtration membrane (0.2 microns) paired with a carbon fiber filter
  • Microbiological filter capacity: 500 gallons (2,000 liters). Pores clog over time as the filter is used; reaching end of life when water cannot pass through.
  • Carbon filter capacity: 25 gallons (100 liters). With frequent use, recommended to change filter every 3 months.
  • Replaceable activated carbon capsule reduces bad taste, chlorine and organic chemical matter for up to 100 liters
  • Advanced hollow fiber membrane technology removes waterborne bacteria and protozoa up to 4,000 liters
  • Removes 99.999999% of waterborne bacteria, including E-Coli
  • Removes 99.999% of waterborne protozoan parasites, including Giardia & Cryptosporidium
  • Requires no electrical power or batteries
  • BPA Free
  • Recyclable

Product Specifications

  • Material: TPU (Thermoplastic polyurethane)
  • Soft bottle capacity: 22 fl oz
  • Soft bottle size: 10.6”L x 3.85”W
  • Filter size: 6.42”L x 1.49”W

Care Tips

After every use, back-flush your LifeStraw by blowing a breath of air back into the mouthpiece to purge all remaining water trapped within the filter. If you have access to clean water, suck some into the filter and back-flush it again. Give it a few shakes and leave both ends uncapped to air dry at room temperature.