Crash helmets, also known as motorcycle helmets or bicycle helmets, are protective headgear designed to reduce the risk of head injuries during accidents. They are made from strong materials like polycarbonate or fiberglass and feature a foam lining that absorbs impact energy. Wearing a crash helmet is essential for safety while riding, as it can significantly decrease the severity of injuries. These helmets come in various styles and sizes to fit different activities, such as skateboarding or snowboarding. Many crash helmets also include features like visors for eye protection and ventilation systems for comfort. Proper fitting and wearing of a crash helmet are crucial for maximum protection.