Positive
The holder is attached firmly to the handlebar and can easily be removed with the thumbscrews principle and fasten. The enclosed rubber flaps allow mounting on handlebars with different tube diameters. The pocket clip can be somewhat difficult to engage the holder; but lasts Bombenfest. I never had even at speeds in excess of 250kmh feel that what might solve. The bag has 2 zippers, so you can create a small opening for a charging cable at any point.
Negative
The window reflects extremely. Therefore, the star deduction. By mirroring I am forced, that cell phone while driving to put on full brightness. This increases the demand on battery power and heat generation. In summer, I could well imagine that the phone due to overheating crashes times. But that can only partly be blamed his pocket. You have to think about whether a cooling or water-tightness is important to halt.
Conclusion
All in all, the holder does what it should and I do not regret the purchase.
mfg
Sven