... PE Good bulletproof performance Anti-corrosion, Anti-ultraviolet,Water proof, good forhid Ballistic helmetFDK-4 made by imported ... Alloy,weight is 1.40kg,and meet the GA293-2001 standar of police ballistic helmet, protection level isLight Material ... ,Good bulletproof performanceAnti-corrosion, Anti-ultravioletWater proof, good for hiding Ballistic helmet Adopting PE UD fasbric ...