A bulletproof vest is a type of protective clothing designed to absorb and reduce the impact from projectiles, such as bullets. Made from layers of strong materials like Kevlar or polyethylene, these vests are commonly used by law enforcement and military personnel to enhance their safety in dangerous situations. The effectiveness of a bulletproof vest depends on its rating, which indicates the level of protection it offers against different types of ammunition. While no vest can guarantee complete safety, wearing one significantly increases the chances of survival in violent encounters, making it an essential piece of equipment for those in high-risk professions.