Beautiful Design / strainer / imprecise fit

I'm using the product now slightly longer than one year. The cover makes a good visual impression. However accumulates permanently dirt in the joints of the honeycomb pattern. Even between shell and Smartphone dirt collects the scratched permanently the back of the phone, especially for the black version because solves the black coating and then arise unsightly scratches aluminum colored. That would be to prevent any where to clean the phone and the shell every few days. The fit wish to addition can be easily left. Otherwise, the product is fine and it can not affect the smartphone oversized.