Mountain bike helmet suitable for men ladies sizes 51 55 cm 55 59 cm 59 63 cm 61 65 cm us sizes s m l xl main colour black surface matt number of air vents 21 applications all mountain touring chin padding chin pad not inlcuded inner padding breathable removable washable visor with visor detachable adjustable 15 plug connection painted size adjustments height adjustable wheel adjustment system headring strap adjustable construction in mol