Bullet proof helmet Material:Alloy/PE Good bulletproof performance Anti-corrosion, Anti-ultraviolet,Water proof, good forhid Ballistic helmetFDK-4 made by imported Kevlar/PE ... .40kg,and meet the GA293-2001 standar of police ballistic helmet, protection level isLight Material,Good bulletproof performanceAnti-corrosion, Anti-ultravioletWater proof, good ...