The primary purpose of a bicycle helmet is to protect the head in the event of a crash or fall. Helmets are designed with an outer shell that absorbs impact and a foam inner layer that cushions the head, reducing the risk of severe injury. When worn correctly, a helmet can significantly decrease the chances of concussions and other head injuries. It is a vital piece of safety equipment for cyclists of all ages, promoting responsible riding and ensuring that cyclists are better protected on the road. Many regions have laws requiring cyclists to wear helmets, especially for children.