Cycling helmets are protective headgear designed to reduce the risk of head injuries during cycling. They are typically made from a hard outer shell and an inner foam layer that absorbs impact. Helmets come in various styles and sizes to fit different types of cyclists, from casual riders to competitive racers. Wearing a cycling helmet is often required by law in many areas, especially for children. Proper fit is crucial for effectiveness; the helmet should sit level on the head and not move when shaken. Regularly checking for damage and replacing old helmets is also important for safety.