Scale armour is an early form of armour consisting of many individual small armour scales (plates) of various shapes attached to each other and to a backing of cloth or leather in overlapping rows. Scale armour was worn by warriors of many different cultures as well as their horses. The material used to make the scales varied and included bronze, iron, rawhide, leather, cuir bouilli, seeds, horn, pangolin scales and, in ancient China, paper. The variations are primarily the result of material availability.