After a good week of use, I can say I'm not disappointed :-)
Before the hearing, I was delighted by the quality of manufacture: plastics are of good quality, the different pieces tightly and finely adjusted, the supplied cable (flat, with microphone) matches the color of the helmet and connectors are gold plated.
The helmet is neither too heavy nor too light, it is comfortable to wear even for long periods, and it does not crush my ears.
Finally, crucial point for a helmet: the SON!
For me it is perfect: set properly on all frequency ranges, the highs are not aggressive, and bass are present and avoid the much more expensive branded cardboard effect that produce helmets to low so pervasive that we heard nothing else.
The headphones are good ears and properly cut ambient noise, but beware: no noise canceling function (at this price, this is normal).
Comfortable on the head, these headphones are so comfortable around the neck because their correct dimensions do not mind too much movement.
The only flaw is perhaps the brand: totally unknown .. but hopefully not for long!
Erwann on Amazon.com