Gi

A gi (sometimes spelled keikogi or dogi) is the classic martial-arts uniform: a wrap-over jacket, matching trousers and a coloured belt that is tied at the waist. It is usually made of sturdy cotton, with the jacket weave and thickness varying by art — grappling styles favour a tougher, heavier weave that can withstand constant gripping and pulling.

Gis are central to arts such as judo, Brazilian jiu-jitsu, karate and aikido, where the jacket, lapels and sleeves are gripped as part of the technique. The belt colour commonly signals a practitioner’s grade or experience level. Some arts and rulesets are trained “no-gi”, using close-fitting sportswear instead so there is nothing to grab.