Mountain bike helmet suitable for men ladies sizes 47 51 cm 51 55 cm 55 59 cm 59 63 cm 61 65 cm us sizes xs s m l xl main colours red black number of air vents 26 applications all mountain x country touring chin padding chin pad not inlcuded inner padding antibacterial breathable removable washable visor with visor size adjustments height adjustable wheel adjustment system headring strap adjustable features internal reinforcement constructio