Tested on a session 1h25mn in the rain. It does not move the ears, the cord, even with the extension does not interfere. The idea of making a reflective cord is great! Same for the clip to keep the cord. And the blow magnets to hold the headphones when they are not in the ears!
For sound, it lacks a bit of treble. But the sound quality remains solid. The low pass better.
It is well above competitors like iSport I've tested (3 models).
The finish is very good and it seems to be robust!