

Thick borosilicate-glass ( no plastic-chemicals getting into my water, thermal-shock-proof, thick-enough to not be too fragile ),
wide-mouth for easy-cleaning,
fits on bike bottle-holder ( plastic one, not metal, to protect the bottle ),
much taller than the short bike-bottles,
cover to keep grime off the drinking-from lid,
silicone or something seal(s),
able to drink quickly from it at stop-lights.
Probably acrylic for the lid-material, since it seems to be reasonably-robust & not too putting-weird-chemicals into my water.
( all this is because bike-bottles made of low-density poly-ethylene are absolutely vile with the chemicals they put into water, & poly-carbonate also has some chemical-seepage issues )
Actually, I’d want a package-deal: larger-diameter bottle-holder & bottle-to-fit: I want water, not svelte-traditional-bottle-diameter…
So, I was partly solving-the-wrong-problem at the beginning…
That’s how learning happens, though: ad-hoc…
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Integrity is the only weapon one can “take with one”, into Eternity.
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