A helmet is a form of protective gear worn to protect the head from injuries. It is commonly used in activities such as cycling, motorcycling, skiing, snowboarding, rock climbing, and various sports. Helmets are designed to absorb the impact of a blow or collision and reduce the risk of head injuries.
Helmets typically consist of a hard outer shell made of materials like plastic or fiberglass, a cushioning liner usually made of foam, and a chinstrap to keep the helmet securely in place. The design and construction of helmets may vary depending on the specific activity or sport for which they are intended.
Wearing a helmet is important for personal safety, as it can significantly reduce the risk of head trauma in the event of an accident or impact.