... and flexible activities, moisture, ultraviolet. Interceptor body armor bullet proof vest,PE UD,NIJ IIIA & below,soft&comfortable,reliable ballistic ... capcity,certificatedThe bulletproof vest is made of Ultrahigh Molecular Weight Polyethylene(UHMWPE), ... level in USA NIJ Standard 0101.04, which is divided into six levels as below table showed Bullet-proof vest