I have a couple of previous doses, so I thought that the new can not be bad. However, I was wrong. The box itself is quite well made. The rubber in the lid is completely poured, therefore can be nothing more between them constitute. However, it is not sooooo good to put the seal. I have the box filled to a quarter with water and shaken vigorously. Unfortunately, the lid held, contrary to all expectations, not tight and there came out water. Thus, the box went back again and again which I bought the first series.
