Alter Ego Frio - Outdoor


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The Alter Ego filtration technology provides the greatest reduction per contaminant. The Outdoor filter cartridge removes everything up to 4 log (99.99%) from chlorine and heavy metals to agricultural run-off and industrial waste, including giardia and cryptosporidium. Laboratory tested and field-proven over ten years, Alter Ego water filters can transform a questionable water source into clean-tasting, contaminant-free water. The outdoor filter is perfect to fulfill all of your urban and backcountry needs in the northern hemisphere where viruses and water-born pathogens are not a problem.

  • Removes up to 99.9% of water contaminants including viruses and bacterias
  • Leaves no metallic after-taste
  • Vacuum insulated stainless steel bottle
  • Keeps water chilling cold up to 24h or steaming hot up to 6h
  • Brings clean water to the developing world through our partnership with ONE DROP
  • Multi-Patented Filtration Technology EPA/ANSI Certified & exceeds NSF standards 42 & 53
  • 100% BPA Free recyclable and replaceable
  • Filters are made in the USA


  • Design Country: Canada
  • Material: Pro Grade 18/8 Stainless Steel, PP#5, Food Grade Silicone
  • Dimensions: 10.5"H x 2.5"D x 3.2"W
  • Volume: 21 Fl Oz
  • Lid: Comes with non-filter screw-top with carabiner for use without filtration
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