What kinds of different anti-stab materials on the world nowadays?

According to different materials, anti-stab materials can be divided into three types: Hard, Semi-soft, and Soft. Hard anti-stab material uses metal sheet as protective plates to stop knife blade and puncture; The soft stab proof material is made of high-performance chemical fiber fabric as the substrate (usually Aramid woven fiber fabric), and finished with additional impregnation or coating crafts; The semi-soft anti-stab material uses fiber and metal composite materials as protective panels. Different stab resistant materials and structures have significant differences in their anti-stab effects and anti-stab mechanisms. In the Early period, hard stab resistant materials had excellent performance, but its weight and rigidity had significant limitations on activity and wearing comfort. Flexible anti-stab materials, with their considerable flexibility and concealment, are increasingly receiving expectations and welcome from users.