Leg irons are a type of restraint used to secure a person's ankles together, typically made of metal. They are often used in law enforcement and correctional facilities to prevent escape and ensure the safety of both the individual and the officers. These restraints can be attached to a chain or a larger restraint system, allowing for limited movement. While leg irons are primarily associated with prisoners, they can also be used in other situations where individuals may pose a risk of flight or harm to themselves or others.