The protective glass on its own offers strong protection and is of high quality.
The problem arose when I combined it with a case from a well-known company, which is also very high quality and secure. Because the glass is so close to the screen, it does not fit in the case that lifts it at the 4 corners.
For a few days, I left it without a case, but the protective glass started to wear out at the edges as it is so close to the screen that it creates a vulnerable "scratch" around it.