Mountain bike helmet suitable for men ladies sizes 51 55 cm 55 59 cm 59 61 cm us sizes s m l main colour black applications enduro park ride all mountain safety features mips brain protection system chin padding chin pad not inlcuded inner padding removable visor with visor adjustable size adjustments wheel adjustment system headring strap adjustable construction in mold outer material polycarbonate weight 320 g inner material polystyrene ep