Farmer in chaps, Sheridan County, Montana

They are buckled on over pants with the chaps' integrated belt, but unlike trousers, they have no seat (the term "assless chaps" is a tautology) and are not joined at the crotch. They are designed to provide protection for the legs and are usually made of leather or a leather-like material. Their name is a shortened version of the Spanish word chaparajos. Chaparajos were named after the chaparral (thick, thorny, low brush), from which they were designed to protect the legs while riding on horseback. Like much of western American horse culture, the origin of chaparajos was in the south of Spain, from which it then passed on to the part of New Spain that later became Mexico, and has been assimilated into cowboy culture of the American West. They are a protective garment to be used when riding a horse through brushy terrain.