Especially if you do clean the bottles by hand with brush, glass has the advantage that gets my no ugly scratches where the bottle then looks furchbar, as I know that of others.
We have a small bottle of plastic, here you notice the difference in turn. The glass bottle has to be pretty tight turn so that the shaking does not leak. But still all in the frame.
The Extra clusure lid for bottles actually you do not need, because the cap closes the teat so hard that nothing runs well when shaken here. Even a full bottle is me so far not been leaked in his pocket. The cap is firmly seated much no chance that does not have this on their own. I always need abzubekommen to these two hands.
Despite this, our little one a chest child is I have no problems with the suckers, she drinks despite vials also beautiful still at the breast.
All in all, a very strong buy recommendation