Hakama are 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, known as a hakamashita.

Ku or kuzi, collectively refers to the traditional Chinese trousers in Hanfu in the broad sense. Ku can also refer to the kaidangku, which are Chinese trousers without a rise as opposed to the trousers with a rise, referred as hedangku or kun in ancient times.