Scorpion EXO-T1200 Solid Street Motorcycle Helmet (Black, Large) TCT Composite Shell: Developed exclusively by ScorpionEXO, the revolutionary TCT (Thermodynamic Composite Technology) process consists of a proprietary 5 layer blend of interlaced and specially formulated fiberglass, Aramid and organic poly-resin fibers Advanced Dual-Density EPS: A multi-layer EPS provides efficient energy displacement in key areas including EPS lining throughout the entire chin bar VSV (Venturi Super Vent) Ventilation System: Scorpion's innovative VSV (Venturi Super Vent) System was specially designed and wind-tunnel tested to increase the venturi effect, a creation of negative air pressure AirFit Liner Inflation System: Inflatable cheek pad system for a superior, personalized fit Ellip-Tec Ratchet System: Easy, secure, tool-less face shield changes in seconds; Pulls the shield back against the eye port gasket during closing to ensure a proper seal