This animated explanation shows why a standard Kevlar bulletproof vest is not designed to stop a thrown medieval axe. While Kevlar can help stop bullets by spreading their kinetic energy across many ...

A new super-strong fiber could revolutionize bulletproof vests and protective gear. Thanks to a breakthrough by researchers in China, the material is stronger, tougher and more effective at stopping ...

Twaron and Kevlar are brand names for aramid fibers, which are strong as steel yet much lighter. They are used to make bulletproof vests, strong ropes, and high-performance car tires, for example.