* Advanced Polycarbonate Composite Engineered Shell: Quiet, aero-tuned design for wind-tunnel tested comfort. EPS-lined chin bar for additional protection. * Ventilation system * Micrometric Automatic chinstrap buckle for quick release & precise adjustment. Article: Scorpion Exo 510 Air Clarus Helmet, black-silver, Size L Article: Scorpion Exo 510 Air Clarus Helmet, black-silver, Size L, black-silver, Size L