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Cairngorm Treks Review - Sawyer International Select S1 Foam Filter

Posted by Cairngorm Treks on Sep 10, 2018

We take water treatment very seriously and have seen first-hand the effects that water born illnesses can have. On first inspection,the Sawyer Select Series appears to push further than any non-mechanical water filtration system we have used before, so we were eager to see how it faired against our usual choice. Made as three separate models, the S1, S2 and S3, all of which combine two k …
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