@nathanu Thanks, I consider buying two CNOC bags. Then I have one as a spare dirty water bag in my backpack, in case the other will tear. I consider buying the three liter CNOC water bags, since they are about the same price and weight as the two liter version. Does the blue coupler that you mentioned fit the CNOC water bag? I will also carry the Sawyer syringe, because backflushing the Sawyer Squeeze should be done with full force, according to the Sawyer manual. And the syringe is probably more sturdy than the CNOC. I found a number of videos about the CNOC water bags on the internet.
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