Coat-mail is a type of armor that was commonly used during medieval times. It is also known as hauberk, chainmail, or ring mail. Hauberk is the French term for coat-mail while chainmail describes the appearance of the armor. Ring mail is a more modern term that refers to the circular rings that make up the links of the armor. Coat-mail was used by knights and soldiers as protection during battles and was often worn over a padded undergarment called a gambeson. Today, coat-mail is mainly used for reenactments and historical demonstrations but it remains an iconic symbol of the medieval era.