Brownells 75th Anniversary - A Shooting Heritage

Lifestraw® - How it Works

By Vestergaard

LifeStraw® uses advanced hollow fiber technology. This is a highly efficient method of filtration. Hollow fibre membrane requires no chemicals like chlorine or iodine.

  1. Water enters and is forced through narrow fibers under high pressure.
  2. Hollow fibers trap bacteria, protozoa, and other contaminants which are flushed out by backwashing.
  3. Clean water exits through tiny pores in the walls of the hollow fibers.
  4. Filtered water is safe to drink.

Easy to Use
Anyone who can use a drinking straw can use a LifeStraw®. Simply draw the unfiltered water through the LifeStraw®, blow air back through the straw to flush and clear it after drinking.

Features & Specs

  • Uses advanced hollow fiber technology
  • Removes waterborne bacteria and protozoan parasites 
  • Reduces turbidity (muddiness)


  • Treats 1000 litres, enough for one person for a full year


  • Doesn’t use any chemicals
  • Raw materials meet US Food and Drug Administration regulations and standards

Easy to Use

  • Easy to operate
  • Requires no electrical power, batteries or replacement parts


  • 22.5 centimeters (nine inches) long and 2.5 centimeters (one inch) in diameter
  • Weighs only 56 grams or 2 ounces (0.12 pounds)