I was looking for a tough, lightweight bottle as an alternative to harmful plastic products. When I bought the bottle, however, I did not know of the health properties of aluminum and thus came from bad to worse. Now I use a stainless steel bottle. Other deductions are available for the closure, I do not often happened that he was leaking after screwing. The screwing should therefore be done with care. If you do not really find the right fixation of the mouthpiece while drinking, often large amounts of air come up with. In plastic bottles drinking is of course easier because you can squeeze it.
