Bulletproof vests are personal protective equipment designed to absorb and disperse the energy of bullets, reducing penetration and impact injuries. They typically consist of two parts: the bulletproof layer—made from metal, ceramics, or high-performance fibers—and the jacket, made from cotton or synthetic materials for comfort and protection of the core layers. Some vests also include a buffer layer to mitigate blunt trauma.
Modern bulletproof vests evolved from ancient armor. Notable milestones include the Sn-42 breastplate used in WWII—3.5 kg forged steel able to resist 9mm rounds from 100-125m. However, these early vests were heavy and ineffective against high-velocity rifle rounds.
Post-WWII, vests integrated nylon with metal plates (e.g., M12 anti-fragmentation vest). In the 1960s, Kevlar was developed—offering strength, flexibility, and lightweight protection against pistol rounds and shrapnel. For rifle protection, metal or ceramic plates are added to key areas. Emerging materials like liquid armor are under development, offering adaptable protection on impact.
With advancements in material science and military needs, future bulletproof vests will be lighter, more flexible, and more protective. Innovations like smart textiles and energy-dispersing gels point to the next era in personal protection.
