Helmet with visor having a shell structure shaped is to at least partly cover the user's head. The visor is hinged to the opposite sides of the shell and mobile with respect to the shell between a raised position and a lowered position where it provides a protective extension of the helmet at the eyes of the user. The visor is manually switchable from the raised and lowered positions by using a magnetic coupling between the visor and the shell which guides and keeps the visor stable in the raised and lowered position and in a plurality of intermediate positions.
