Body armor is "a kind of clothing that can absorb and dissipate the kinetic energy of warheads and fragments, prevent penetration, and effectively protect the protected parts of the human body." From the perspective of use, body armor can be divided into two types: police type and military type. From the perspective of materials, body armor can be divided into three types: soft body, hard body and soft-hard composite. The material of soft body armor is mainly high-performance textile fibers. These high-performance fibers are much higher than the energy absorption capacity of general materials, endowing body armor with bulletproof function, and because this type of body armor generally adopts the structure of textiles, it has considerable The softness is called soft body armor. Hard body armor is based on metal materials such as special steel plates, super-strong aluminum alloys, or hard non-metallic materials such as aluminum oxide and silicon carbide. The body armor made from this generally does not have flexibility.
A ballistic vest, commonly referred to as a bulletproof vest, is a specialized piece of personal protective equipment designed to provide ballistic resistance to the wearer. It is primarily worn by law enforcement officers, military personnel, and other individuals who may face potential threats from firearms or other ballistic projectiles.