woven top worn with hakama in traditional practice

Excercise jacket

(kimono) jacket and trousers worn during the training

(ghee) training clothing. (a synonym is gi)

Keikogi (稽古着 or 稽古衣) is a Japanese word which means uniform for training (keiko means practice, gi means dress or clothes). Often keiko is replaced with the name of the Japanese martial art being practiced.