This bulletproof vest with collar, shoulder, front&back, sides and groin pretection. Our ... , what is more, it is lighter (153gsm). An NIJ IIIAbulletproof vest ( Size M ) only needs 35 layers at most. The total ... PE material, and its price is a little higher.Bulletproof vest has different protection levels; we mainly have NIJ II Level ... into NIJ III and NIJ IV Level bulletproof plate. bulletproof vest