Bmx helmet suitable for men sizes 51 55 cm 55 58 cm 58 61 cm main colour black surface matt number of air vents 10 applications dirt park ride chin padding with chin pad inner padding removable breathable antibacterial washable visor with visor size adjustments pads strap adjustable construction hardshell weight 350 g inner material polystyrene eps helmet technologies uvex monomatic closure system fas strap system certified en din 1078