Race cycling helmet time trial helmet suitable for men sizes 50 56 cm 54 60 cm 56 62 cm us sizes s m l main colour blue surface matt number of air vents 5 applications triathlon race chin padding chin pad not inlcuded inner padding breathable removable visor without visor size adjustments wheel adjustment system headring strap adjustable constructions in mold microshell outer material polycarbonate weight 210 g inner material polystyrene