Chainmail started being used in the 10th century, but became more popular in the 12 century. Chainmail was worn by early knights and was made of iron. It weighed up to 50 pounds. Chainmail protected knights from cuts but didn’t soften blunt attacks as well. Chainmail was often made from iron or steel. Historically, the one weave used for Chainmail was the 4-in-1 weave. (Each ring had four other rings linked to it). Chainmail fell out of battle use in the 13th century since plate armor proved to be more useful as warfare evolved.