Classic Police Usage Inner Bulletproof Vest

Currently the mainstream choice. They typically use silicon carbide, boron carbide, or alumina ceramic as the faceplate, backed by a high-strength fiber backing plate (such as polyethylene or aramid). Their ballistic mechanism relies on the extremely high hardness of the ceramic to instantly shatter the projectile and dissipate its kinetic energy, while the fiber backing plate is responsible for capturing residual fragments. Advantages include high protection level and relatively light weight, but the ceramic layer may break after repeated impacts, requiring timely replacement.

Primarily made of special steel or titanium alloy. They rely on the toughness of the metal to deform, slow, and capture the projectile. Advantages include durability and the ability to withstand multiple impacts, but the weight is significantly higher than equivalent ceramic plates, placing a greater burden on soldier mobility.

Made of multiple layers of high-performance fiber fabric (such as ultra-high molecular weight polyethylene or aramid), they absorb and disperse the projectile's kinetic energy through the stretching and breaking of the fibers. It primarily defends against pistol bullets, fragments, and low-power rifle bullets; it is flexible, lightweight, and comfortable, but cannot withstand direct hits from high-velocity rifle bullets.