Outdoor (REG) | Water Filter Cartridge (99.9%)

$ 25.00



  • Filters river, lake and tap water (Developed Countries)
  • Removes up to 99.9% of water contaminants including Giardia and Criptosporidium
  • Leaves no after-taste
  • The Outdoor filter is perfect to fulfill all of your urban and hiking/camping needs in water


  • Compatible only with the original plastic Alter Ego bottle, not the Alter Frio bottle
  • Does not purify viruses and bacterias. Use the Globetrotter cartridge if you require purification.
  • Multi-Patented Filtration Technology EPA/ANSI Certified
  • Exceeds NSF standards 42 & 53

    The Alter Ego filtration technology provides the highest contaminants' rate reduction. The Outdoor filter carttridge removes chlorine, heavy metals, agricultural run-off, industrial waste and Giardia and Criptosporidium.

    Laboratory tested and field-proven over ten years, Alter Ego water filters can transform any water source into clean and contaminant-free water. The Outdoor filter is perfect to fulfill all of your urban and backcountry needs.

    • PP#5, Food Grade Silicone
    • 100% BPA Free
    • Recyclable and replaceable 
    • Filters are made in the USA