The helmet is very comfortable and is not too heavy. He is well ventilated, sweating under the helmet is kept within limits. I am therefore already fallen several times from the skateboard on his head - the helmet still looks like new and has the bell very well absorbed, so no headache after the fall. Similar accidents with no helmet were very painful, I am very happy to have made this investment.
Incidentally, this model is the original, which Tony Hawk has saved the head and career. So a classic.