Baseball stirrups, also called stirrup socks or simply stirrups, are socks that are part of a traditional baseball uniform, giving the uniform a distinctive look. Stirrup socks are usually one of a team's traditional colors, and are worn over long socks that are usually white in color. The stirrup sock lacks toe and heel sections, instead having a loop (a stirrup) which fits within the arch of the foot. Over the years, the stirrup loop tended to get longer, exposing more of the white undersock, thus creating a look unique to baseball. Most contemporary players in Major League Baseball (MLB) do not wear stirrup socks, as uniform pants that extend all the way down to the ankle have become increasingly popular since the mid-1990s.