a new Judogi control equipment

Judo practitioners traditionally wear white uniforms called jūdōgi, which simply means "judo uniform", for practicing judo. Sometimes the word is seen shortened simply to gi (uniform). The jūdōgi was created by Kano in 1907, and similar uniforms were later adopted by many other martial arts. The modern jūdōgi consists of white or blue cotton drawstring pants and a matching white or blue quilted cotton jacket, fastened by a belt (obi). The belt is usually coloured to indicate rank. The jacket is intended to withstand the stresses of grappling, and as a result, is much thicker than that of a karate uniform (karategi).

The modern use of the blue judogi was first suggested by Anton Geesink at the 1986 Maastricht IJF DC Meeting. For competition, a blue jūdōgi is worn by one of the two competitors for ease of distinction by judges, referees, and spectators. In Japan, both judoka still use a white judogi and the traditional red sash (based on the colours of the Japanese flag) is affixed to the belt of one competitor. Outside Japan, a coloured sash may also be used for convenience in minor competitions, the blue jūdōgi only being mandatory at the regional or higher levels. Japanese practitioners and purists tend to look down on the use of blue jūdōgi.