Uniform

Hakama is a type of traditional Japanese clothing. Originally stemming from kù, the trousers worn by members of the Chinese imperial court in the Sui and Tang dynasties, this style was adopted by the Japanese in the form of hakama in the 6th century. Hakama are tied at the waist and fall approximately to the ankles. They are worn over a kimono specially adapted for wearing hakama. 

While hakama used to be a required part of menswear, nowadays typical Japanese men usually wear hakama only on extremely formal occasions and at tea ceremonies, weddings, and funerals. Hakama are also regularly worn by practitioners of aikibudo and katori shinto ryu (from 1st kyu).