The build quality is not bad, the material pleasant and smooth, at first, the rubber smell a little - but that passes quickly.
Unfortunately show up after some time and some uses of leaks between the white plastic and blue rubber. Thereby it can happen that you suck in more air than one would like.
Its use is, as I said, very simple and comfortable. One can very easily dispense the discharge amount and the introduction of the white plastic attachment also works absolutely without problems.
Only the fact that the last third of the content is a little difficult rauszubekommen would be negative to count here.
4 of 5 stars from me. The product does what it is supposed, is easy to use but, because of the price situation and the corresponding end processing, one or the other shortcoming. Nevertheless, a buy recommendation for those who want to start with small amounts.