Quick release chinstrap mechanism for ease of operation and safety. Size: Large ; Head Circumference: 60cm. High quality UV resistant Polyurethane paints used for aesthetic enhancement ; Shell Material-Hi Impact-ABS ; Helmet Full Face ; Polycarbonate Visor With Hard Coated. Dynamic ventilation system for increased air flow providing more comfort to the rider while driving. Outer shell injected from special high impact grade of engineering thermoplastic. Regulated density EPS concussion padding lined with specially treated anti allergic velveteen. All helmets feel tight at first to meet safety requirements and foam takes time to adjust according to head size.. Country of Origin: India