

At home I use a 1L glass bottle with straight sides and a wide opening, metal lid and a neoprene sleeve. It’s cheap, easy to clean and does its job.
The obvious downside is that it’s heavy and can break if you drop it but I don’t travel a lot so that’s fine for me.



Have you clicked the link? It’s literally the relevant passage from the „Jugendschutzgesetz“ (youth protection law) which is a federal law.