St Benedict Host Eucharistic Minister Travel Pyx Church Supplies

How does this pyx hold up with use? The lining inside the lid looks like it is glued on. Has it help up after use and cleaning? Thanks!

What is the size ( diameter) of this pyx?

is it hinged, or does the top come off completely?

Does this pyx tarnish? I have bought a hospital pyx at a similar price, and it is a pain to keep it polished and attractive.