Leaking! Raus waste of money.

I got the GoToob 60ml bought during my vacation in the United States, because I liked the concept.
My joy was not long. The tubes are leaking. If you fill in and liquids, the tube upside down then the liquid seeps out slowly. The built-in suction must be kept too weak by a full tube permanently at the mirror, after 1 to 2 hours was rushed off the Tube.
The tubes are not airworthy, strong pressure on the shutter jumps up because it's just a folding mechanism.
Raus waste of money, down the line. Since the cost of the tubes German drugstore discounters are better.