Just like anything else, body armor is made of various materials. Aramid fibers, like Kevlar, are some of the most popular ballistic material. Rated as five times stronger than steel, Aramid fiber is a tried-and-true form of body armor that works. Not only that, it is incredibly flexible, allowing you to move more freely while being worn. Polyethylene is a newer type of body armor that is just as strong as Kevlar. However, it differs in its affordability. With that said, it can get really hot, so it’s not advised that you wear it in warmer climates. Carbon nanotubes are the latest development in body armor, providing protection that is rated at 100 times stronger than steel. Not only is it remarkably tough, but its flexibility is excellent.  The main concern with carbon nanotubes is that they are simply way too expensive for the average consumer to reasonably afford.