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Kevlar ballistic vests are designed to offer protection against level II and level IIIa types of ballistic threats. According to NIJ and HOSDB standards, level II ballistic vests must offer protection against 9mm handguns with up to .357 magnums. Level IIIa ballistic vests offer protection against 9mm handguns with up to .44 magnums. However, level IV threats are not protected by the normal Kevlar bulletproof vests. In other words, Kevlar body armors are designed for protection against firearms that are easily found within the general population.