HJC CL-X7 Dynasty Off-Road Motocross Helmet (MC-6F, Large) Advanced Polycarbonate Composite Shell - Lightweight, superior fit and comfort using advanced CAD technology Impact absorbing multiple density EPS liner Revolutionary design with unique visor ACS Advanced Channeling Ventilation System - Full Front to Back Airflow Flushes Heat and Humidity Up and Out Large Eye Port - Provides maximum visibility and superior goggle fit