A Gi (sometimes referred to as Kimono) is the uniform that is typically worn when training Jiu Jitsu. It consists of 3 pieces: a jacket (or top), pants, and a belt. The material in which the three pieces are made is specially reinforced to withstand the rigors of daily practice. Most practitioners of Jiu Jitsu who advocate the usage of the Gi cite the more technical aspect of grappling with a Gi.