Enh maybe it’s fine. Even so, steel is real.

I’m a little concerned about the potential for aluminum toxicity.

No plastic, no aluminum. No glass either just because I’m clumsy. Wide opening only. If I can’t fit my hand in to clean it, I don’t want it.

I have a 64 oz one, and a 128 oz one. Am aiming for them to be buy-it-for-lifers.