Brigandine is a type of body armour consisting of numerous, small, rectangular, overlapping, steel plates riveted to a textile shell resembling a sleeveless doublet. As with many other forms of armour, surviving examples vary by date and region, but many had a pair of larger 'L-shaped' plates centered over the upper chest, which were known as lung plates. The rivets, or "arming nails," were commonly arranged in triangular groups of three and passed through . Brigandine spaulders are regularly depicted in period artwork; however, no examples are known to have survived.