... .different protection levels :NIJ standard(0101.04/0101.06) IIA,II,IIIA,III,IV optional.2.quality and advanced composite used ... . Protection levelProtection materialsProtection partProtection areasizecolor(NIJ0101.04/0101.06) IIA II,IIIA,III,IVUHMWPE UD,aramid UDcollar,shoulders,chest,rear ,sides0 ... the most kinds of quality composites used in series of ballistic and bomb products. anti ballistic vest