You can not write fault the quality and free processing. But from the practical side, there are better Isoliertrinkflaschen because -the same is under the lid as a drinking cup, is still a Drehverschluss-, this must logically be opened and poured the drink into the cup. This I find not so good because I like to go drink my drink straight from the bottle! Moreover, I find it more hygienic to drink directly from the bottle as the drink, nor to pour into a cup and this then to screw on the bottle!
