HJC CS-MX II Madax Off Road Motorcycle Helmet (MC-26Sf Blue/Orange/Black, Large) Advanced Polycarbonate Composite shell: revolutionary design with unique visor. Lightweight, superior fit & comfort using Advanced CAD technology. "ACS" Advanced Channeling ventilation system: full front to back airflow flushes heat/humidity up and out. Nylex interior: removable and washable. Large eye port: for maximum visibility and superior goggle fit. D.O.T. Approved