I just received it and tested it. It fits good and it feels like it has better protection then my last one, especially for the lower teeth. While it's a double mouth guard, breathing is still ok.

It's quite a strong case while it's a bit flexible as well. So it's able to absorb shocks and it ventilates good. What else do you need?

I just received it and tested it. It fits good and it feels like it has better protection then my last one. Breathing is also much easier with the new one.