Who has used the phone case of tech2 1? Can you tell me the advantages?

As a user, I think the phone case of tech2 1 is expensive, but it's worth it. The first is the style, which is relatively simple and has the high-end feeling of Apple. Secondly, the material is very comfortable and light. The most important thing is to prevent falling. I fell a few times, and there was nothing wrong with my mobile phone.