The Mainframe Saint and Sinner helmets were designed with the rider's safety, fit and function in mind The shell is constructed of a Fiberglass/Dyneema blend and is lined with a dual density styrene liner for incredible strength without undue weight Features include a venturi super-vent system for the ultimate in airflow A three forehead switch acts as an additional ram-air vent to significantly increase the overall cooling of the helmet Internal on/off chin exhaust switch offers control of escaping air Removable molded breath deflector reduces shield fogging Positive-lock chin venting system helps prevent fogging Removable/washable cheek pads with formed ear pockets that can accept comunication or audio speakers Removable anti-fog breath deflector Optically correct polycarbonate, 7-position shield offers safe, clear vision and easy no-tool replacement system Exceeds all DOT and Snell standards