... penetration wide view,high strength light weight,good finishing Flat anti-riot helmet TECHNICAL SPECIFICATIONMaterialShell4mm thickness ABSVisorFog proof, ... high transmittance PCStripRubberNeck protectorArtificial leatherColorDark blue or by orderSize Free size, can be adjust by chin tripNet weight1.5kgTransmittance ... , attractive appearance, good light penetration, wide view flat anti-riot helmet