This is kevlar helmet . American Style, and it has 4 kinds:*. Resists from 79 light submachine gun, 7.62mm, 515m/s bullet speed, weighs 1.6kg.*. Resists from 54 pistol, 7.62mm, 450m/s bullet speed, weighs 1.45kg.*. American Standard Level NIJ IIIA, resists from 9mm, 420m/s bullet speed, weighs1.3kg.*. American Standard Level NIJ II, resists from 9mm, 370m/s bullet speed, weighs1.2kg.

kevlar helmet