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Both of our frank green ones have a dead weird smell that puts me off using them (although it doesn’t seem to affect taste), despite repeated scrubbing, much prefer the Stanley one I was gifted tbh.
https://www.amazon.co.uk/Stanley-Classic-Trigger-Action-Travel-Hammertone/dp/B07HXVS24V/
That multibev looks great tho.
My brother and my wife have the camelback Horizon tumblers and really rate them.
I've one of these, I find it always has a smell about it. Compared to any other keepcup.
Would a Multibev
https://tinyurl.com/Multibev
Work