Some info: How does a stab vest differ from a bullet proof vest? Firstly most of our stab proof vests also offer ballistic protection. The difference between a ballistic only vest and a multi threat vest (ballistic and stab), is usually a few extra layers of treated Kevlar®. There are a few popular methods of treating a vest to add stab protection. The two main ways are to treat Kevlar® directly with a high strength plastic or glue (similiar to laminating paper, but with industrial high strength products). The second most popular way is to attach chain mail to the kevlar® stopping edge weapons from penatrating. Both ways are equally effective methods for creating a stab proof vest, and provide similiar results. Short version, something EXTRA gets done. It isn't just kevlar alone anymore.