How do bulletproof vests work? We all know that bulletproof vests are designed to cope with the attack of firearms, and they have been regarded as a necessity for us when working or living in a danger environment. Many people are curious about how bulletproof vests work to resist bullets. This issue should be started with the structure, material and working principal of ballistic vest. Bulletproof vests are usually made of special materials, such as Kevlar, PE, nylon, and Alumina. According to materials, bulletproof can be divided into two categories, soft armor and hard armor, whose structures and functional principles are different from each other. 1. Soft armor Soft armor is mainly made of nylon, aromatic polyamide synthetic fiber, and ultra-high molecular weight polyethylene, which are all high-performance fibers with ultra-strong energy absorption capability low density, high strength, great toughness, and excellent molding proper...