Anything with a lid roughly like this one. Wide Nalgene-compatible mouth for filling and screwing on the appropriately-sized bottle you feel like that day or had to replace, and has smaller drinking-hole with an attached screw-on cap.

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Anything with a lid roughly like this one. Wide Nalgene-compatible mouth for filling and screwing on the appropriately-sized bottle you feel like that day or had to replace, and has smaller drinking-hole with an attached screw-on cap.

Oh shit that's my festival bottle. Super easy to fill at whatever jank ass water station setup the venue has, easy to drink from, and I can clip it to a carabiner on my bag strap for hands-free storage 🤘
I completely missed something with this whole trend. I get wanting to go metal (or glass) to avoid microplastics, but is it all just conspicuous consumption after that, or am I missing something more fundamental?
Meanwhile, I'm only using a steel flask on hiking trips; a freebie from a previous job at that. A coffee cup or glass does the job for me at the office.
I've been using Doppers ever since I got like 4 gifted to me in two years. After I bought one, of course.
Dopper(s?) gets nasty around the sealing ring eventually. Mine turned algae-green with no way to properly get it off; I didn't manage to clean it anyways.
I have a collection of knock-off brands from Costco. I like all the pretty colors.
I got an owala at sams club ages ago and the isulation is crazy on those things. I once forgot it at work and it still had ice in it a full day (like 20+ hours) when I went to get it
Rtic>yeti