I have a 58cm head. The size 57 - 58 cm fits me perfectly. It is well constructed and comfortable. The colour makes it very visible. I use it for cycling in the dark. Because I commute by bicycle in the dark I wear a head torch. I chose this helmet because the front is relatively flat. As I hoped, my head torch mounts perfectly onto the front of this helmet. It also vents my head better than my previous head gear... a baseball cap. I am slightly less sweaty at the end of my journey. I don't like wearing helmets, but this one is a happy compromise.
There is not too much to say about this except that my grandson thinks it's "Cool!" and his parents are pleased to have such a great product protecting their son. The style and quality are both excellent. Cannot fault it and great value too.
This is a really nice helmet. Very sturdy, good quality, comfortable lining and light weight. Feels more solid than a normal bike helmet, which I use it for, and also suitable other sports. The colour makes it very visible on the road.