Continue to use your Frontier Flow bottle for international adventure and survival with a Frontier Series II RED Line filter. This filter is certified to EPA standards for the removal of virus, bacteria, Cryptosporidium and Giardia. It also reduces chlorine, chemicals, taste, and odor and it certified lead free to NSF/ANSI-372. Add an additional 120 gallons of removal capacity to your pack with perfect fit and connectivity.
