Jackal Helmet - Dark Matter - Purple - Medium Aerodynamic, injection-molded polycarbonate shell creates a quiet, stable ride, Scratch-resistant polycarbonate anti-fog shield, Drop-down sun visor for versatile use in all lighting conditions, Intake and exhaust vents engineered for superior temperature regulation, Chin vent design improves interior airflow and reduces shield fogging, Dual-density EPS foam interior, Fully removable, polyester moisture-wicking liner and cheek pads