Very good helmet
I've had the headphones for just over 2 years, and apart from the problem of the microphone stem coming loose after a few months (the headphones were returned and repaired by the manufacturer (thanks LDLC)), the headphones are clearly worth their price.
Very comfortable, very good sound (headphones + microphone), I highly recommend it!
(Everyone says it, and I'll say it again, it's almost essential to use a DAC or sound card to take full advantage of the sound).