Safety helmets are protective headgear designed to reduce the risk of head injuries in various environments, such as construction sites, sports, and industrial workplaces. They are typically made from durable materials like polycarbonate or fiberglass and feature a hard outer shell to absorb impact. Inside, a foam lining helps cushion the head and provides comfort. These helmets often come with additional features, such as adjustable straps for a secure fit and ventilation holes for breathability. Some models may also include accessories like face shields or earmuffs for added protection. Wearing a safety helmet is essential for ensuring personal safety in hazardous situations.