... .weight:1.56KG 4.feature:antiriot * police helmet* material:PC* weight:1.56KG* feature:antiriot*size:1.S:Head circumference ... fixed bracket; cover, neck protection, etc.* Material: alloy engineering plastics (PC)* Wear devices: solid comfortable to wear, easy escape, can withstand ... of 6,8,3, cone does not penetrate the helmet police helmet