This is PE Helmet, American Style, is made of Dyneema (PE) fiber, 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...