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skier This thing does what it says on the tin. Squeezability is great - I've been using it for back-flushing my filter without issue. It's everything I love about my HDPE 1L bottle from you-know-who, but in a nicer narrow form factor with the wide compatibility of the 28mm thread.
Of note if you have a Culoclean bidet that notably doesn't fit Cnoc's other soft bottles: it DOES fit this thru bottle!
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Alex Ekins Just bought this from Ultralightweight Backpacking shop in the UK. Really like it, will be replacing my nalgenes.