Fehlkonstruktion !!! Material failure after two days!

Is not so !!! Look great and also the processing can be beautiful hope. Then the nasty surprise! Had bought three pieces. The first time the mouthpiece broke after two days. The plastic mouthpiece of the second burst due to temperature differences. Several splinter after I spent two minutes outdoors. The third splintered also very "unexpected" after a very short service life of 4 days.
The mouthpiece is welded (no exchange is possible) and the used plastic is abnormally sensitive. Had me about this product never been very upset if the fracture is not the whole Liquid would be dropped onto the trousers and the upholstery of cars.
So a very simple AWAY !!!