KASK RAPIDO black & gray cycling helmet Size: M #kask #cycling Size Description: M = 52-58 cm. L = 59-62 cm [ RAPIDO : Protection for everyone ] An entry level helmet of the highest safety standard, stacked with professional features including excellent airflow efficiency, precise and comfortable fitting. Rapido feats Up’N’Down adjustment system for the fit and Multi In-Moulding technology that guarantees great protection to the head.