Data sheet: 2 size caps. Outer shell in fiberglass. Interior made of hypoallergenic fabric. Anti-scratch exterior visor in polycarbonate Max Visieon. With pinlok predisposition. Rapid visor removal mechanism. ECE approval 22.05 and DOT US. Ducted internal ventilation system with aerodynamic air intakes. Excellent closure with micrometric metal buckle. Internal polystyrene with multiple density. Visor thickness 2.2mm. Weight 1300 + -50G.