Helmets are essential pieces of safety equipment designed to protect the head from injuries during various activities, such as cycling, motorcycling, and sports. They are typically made from durable materials like polycarbonate and foam, which absorb impact and reduce the risk of head trauma. Wearing a helmet can significantly decrease the chances of severe injuries in accidents. In addition to their protective function, helmets often come with features like ventilation, adjustable straps, and visors for enhanced comfort and usability. Different types of helmets are tailored for specific activities, such as bicycle helmets for cyclists and football helmets for players, ensuring optimal safety in each sport.