Abstract: A multi-positional helmet visor system in which the visor can be repositioned to a plurality of positions. Cooperating structures in the visor and helmet inhibit the unwanted changes in visor position. The helmet uses a magnetic source disposed on a boss in a sliding element of the visor, which cooperates and mates with a series of ferromagnetic elements disposed in detents along the medial front to assist in holding the visor in place. The magnetic force and boss-detent structures inhibit unwanted movement the visor. The visor may be inhibited from being lowered into the cyclist's field of view by sets of cooperating stops on the visor and helmet.