My bottles are: a couple from REI and one from Nuun, each a relatively thick but soft plastic. They work for me, briefly wash and dry post ride (no dishwasher) - but I'm not riding in high temperatures and my liquid is lightly flavored, de-chlorinated tap water.
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Vintage, modern, e-road. It is a big cycling universe.
Last edited by Wildwood; 10-23-20 at 11:27 AM.