What is a Chainmail Coif?
A chainmail coif, also called a mail coif, is a form of medieval armor that covered the head with a flexible layer of chain mail rings. This coif not only protected the head, but also the throat, neck, and the top of the shoulders.
The chainmail coif was widely used by European soldiers and knights during the Middle Ages and formed a standard part of their equipment for a long time.

Origin and Development of Chainmail
Chainmail armor was already developed in the 5th century BC by the Celts. The idea of interconnected metal rings later spread throughout Europe and became the most commonly used type of protection for soldiers and knights during the Middle Ages, especially until the 13th century.
The strength of chainmail lay in its flexibility. It offered protection against cutting wounds, while still giving the wearer enough freedom of movement to fight, ride, and walk.

Construction and Technique
The rings of chainmail were usually connected according to the so-called 4-in-1 pattern. In this method, each ring is connected to four other rings, creating a strong and flexible structure.
In the earlier forms of chainmail, the rings were often riveted. Small metal rivets prevented the rings from bending open during a fight. In some variants, riveted rows were alternated with solid rings to combine both strength and production efficiency.

Wearing and Comfort
Contrary to what is often shown in movies, a chainmail coif was never worn directly on the skin. Under the coif, there was always a lining, usually made of fabric, leather, or sometimes felted material or hair padding. This lining served an important function. It dampened blows and friction from the metal rings, but also provided insulation. This meant that it could get very hot under a chainmail coif, which could be a serious disadvantage during prolonged fights.

Disappearance and Succession
By the end of the 15th century, the chainmail coif gradually fell out of use. It was largely replaced by the aventail, a chainmail collar that was attached directly to the helm. This new construction protected the same areas – head, neck, and shoulders – but was better integrated into the increasingly developed plate armor. As a result, the loose chainmail coif eventually became unnecessary in military equipment.
Internal links
- Aventail (Camail): Flexible Neck and Face Protection
- Standard: Chainmail Shirt Collar for Neck Protection
- Bascinet: Medieval Helm with Visor and Neck Protection
- Gambeson: Medieval Padded Armor and Protection
Sources:
- Visual Source: The Maciejowski Bible (ca. 1250), which depicts knights with loose and integrated chainmail coifs (coif).
- Academic Literature: Publications from the Mail Research Society.