Black clothes and white belts are a specific clothing style, which is usually related to Japanese gangs. In Japanese gangster culture, members often wear black clothes with a white belt around their waist. This kind of costume is called "gangster costume" or "black and white belt". The wearing style and color combination of black clothes and white belts have become one of the symbols of Japanese gangs. This kind of clothing is not only clothing, but also symbolizes the identity and sense of belonging of gang members.