Cover protects reliably my XperiaZ2. She has all weathers held, collected knocks and drops, and still works. But one sees her half year intensive work - nice is something else. Mir is not as important, and as long as the envelope further holds together somehow, I will also use further. Furthermore, I can not imagine that another shell would look different after this great stress me. The only complaint I have the card slots in the shell Mir falls whatever I'm doing in there almost on principle after a while out. That is why they are not usable for me.
If the shell but then one day make the trip over the Jordan, I'll probably buy me again, because the price / performance ratio (especially in comparison with the original cover) very well. In this respect I can only recommend the Case warmly.