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  • Sale Ends May 25
    Top Rated
    GraylGeoPress Replacement Purifier Cartridge
    $22.39
    Save 25%
    compared to  $29.95
    716 reviews with an average rating of 4.9 out of 5 stars
    KatadynHiker Pro Replacement Cartridge
    $59.95
    64 reviews with an average rating of 4.0 out of 5 stars
    KatadynBeFree Replacement Filter
    $29.95
    147 reviews with an average rating of 4.0 out of 5 stars
  • Sale Ends May 25
    PlatypusGravityWorks/CleanStream Replacement Cartridge
    $59.89
    Save 25%
    compared to  $79.95
    75 reviews with an average rating of 4.2 out of 5 stars
    AquamiraWater Treatment - 1 oz.
    $14.95
    76 reviews with an average rating of 4.3 out of 5 stars
  • Sale Ends May 25
    Top Rated
    GraylUltraPress Replacement Purifier Cartridge
    $18.69
    Save 25%
    compared to  $24.95
    174 reviews with an average rating of 4.8 out of 5 stars
  • Sale Ends May 25
    LifeStrawGo Series Replacement Membrane Microfilter and Carbon Filter
    $19.39
    Save 25%
    compared to  $25.95
    62 reviews with an average rating of 3.6 out of 5 stars
  • Sale Ends May 25
    LifeStrawPeak Series Membrane Microfilter Replacement
    $19.39
    Save 25%
    compared to  $25.95
    29 reviews with an average rating of 3.9 out of 5 stars
    KatadynBeFree Activated Carbon Replacement - Package of 3
    $29.95
    0 reviews
  • Sale Ends May 25
    LifeStrawPeak Series Activated Carbon + Ion Exchange Filter Attachment
    $11.19
    Save 25%
    compared to  $14.95
    167 reviews with an average rating of 4.2 out of 5 stars
    KatadynBeFree Bottle Replacement Filter
    $29.95
    17 reviews with an average rating of 1.2 out of 5 stars
  • Sale Ends May 25
    Top Rated
    LifeStrawGo Carbon Filter Replacement - Package of 2
    $7.39
    Save 25%
    compared to  $9.95
    91 reviews with an average rating of 4.7 out of 5 stars
  • Limited time only! The R E I Co-op Mastercard.

    Get $130 in value

    When approved for the REI Co-op Mastercard by May 25, you’ll get $30 in card rewards. Plus, you can earn a $100 REI gift card after your first non-REI purchase within 60 days from account opening. Terms apply.

Sort: Best Match