The tops break easily
The bottles themselves are fine, however the black top breaks easily if dropped. There is a small black stopper that creates the seal and prevents leakage, and this tends to shear off when dropped from 3-4 feet high.  The bottles will not seal once this breaks off. I have broken 3-4 lids. I have extra lids from unused bottles so have changed them when this happens
Rating: 2 stars