But now to the bottle:
The bottle and the closure is as already written dishwasher safe, so far completely without any visible marks on the bottles.
The bottles have a pleasantly large drinking opening (> 1cm in diameter), which is sealed with a silicone stopper, which pushes through the lid on top of the opening. The lid has a spring mechanism which can be locked via a metal bracket.
This allows the bottle safely transport, after unlocking but open-handed.
In my experience, the bottle is sealed and pressurized by carbon dioxide or effervescent tablets, then pops open but when. The first bottle I have been more than 6 months when used several times a week, so far I have not made any negative experiences. Therefore 5 stars.
