... :PC 3.weight:1.56KG 4.feature:antiriot * police helmet* material:PC* weight:1.56KG* feature:antiriot*size ... L:Head circumference size applies580-600mm* Product structure: the helmet shell, the buffer layer, to wear devices, masks ... wear, easy escape, can withstand 90kg of tension, with a maximum elongation system does not exceed 15mm* Transmission ... 8,3, cone does not penetrate the helmet police helmet