Quote:

you lose periferal vision.




Depends on the helmet. I cannot see the edges of my face shield opening (HJC Symax) by turning my eyes all the way to either side. Therefore it cannot affect my peripheral vision.
A 3/4" rock in the middle of my forehead, however, could be disastrous. And my helmet has deflected a few of those.


Contra todo mal, mezcal; contra todo bien, tambiƩn