Headlamps and helmet lights are worn on a worker's head or attach to a hard hat and aim a light beam forward while keeping both hands free to work. Also known as headlamp flashlights, they make workers visible to others and move with them to navigate dark or dimly lit areas and shine light into unlit cabinets and enclosures. They are commonly worn by maintenance and repair technicians, underground utility crews, first responders, law enforcement officers, military personnel, and outdoor enthusiasts. General purpose headlamps are a cost-effective light source for light-duty or occasional use. Industrial headlamps and helmet lights withstand heavy use in environments where they may be subject to dirt, grime, and impacts. Tactical headlamps combine a heavy-duty, impact-resistant lamp with advanced features tailored for public safety, first response, and military personnel. Safety-rated headlamps illuminate areas where flammable, combustible, or ignitable materials are present.