Unfortunately, I'm 1,90m and my head is larger. The headset is very rigid. It can turn up something, I have checked with Plantronics. By the middle of the metal a little flat bends are removed, so that the rounding goes out. Then you have more game. Nevertheless, it pushes up or to the side then.
Therefore, I had to give it back.
Pity Standard Temple, as Plantronics and the thing would be perfect!