Heater shield

The heater shield or heater-shaped shield is a form of European medieval shield, developing from the early medieval kite shield in the late 12th century in response to the declining importance of the shield in combat thanks to improvements in leg armour. The term is a neologism, created by Victorian antiquarians due to the shape's resemblance to a clothes iron. Examples are depicted in the great seal of Richard I and John, King of England.