Race cycling 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 black white number of air vents 25 applications road triathlon touring safety features mips brain protection system chin padding chin pad not inlcuded inner padding removable washable size adjustments height adjustable wheel adjustment system headring strap adjustable construction in mold inner material polystyrene