Judo Uniform Guide – Rules, Types & Care for Your Gi

When working with judo uniform, the traditional attire that includes a jacket, pants and a belt, designed to protect both athletes and the fabric during throws. Also known as gi, it signals a judoka’s commitment to the sport and provides a clear way to identify rank. Another core element is the belt, a colored cord wrapped around the waist that marks the practitioner’s level from white to black, a visual cue that guides training partners. In a dojo, the training hall where judo is practiced, strict dress code rules apply, ensuring safety and respect. These entities together form the foundation of judo’s visual identity and help maintain the sport’s standards.

Key Points About Judo Uniforms

One of the most common questions is whether a black gi is allowed. Official rules limit competition gi colors to white or blue, so a black gi is off‑limits in tournaments – think of it like a referee’s red card for dress code violations. The jacket must be thick enough to withstand gripping, typically 10 mm for adults, while the pants should be reinforced at the knees. Belt colors follow a strict progression: white, yellow, orange, green, blue, brown, then black, each representing years of training and skill. Competition regulations also dictate that the gi must be clean, free of tears, and the belt securely knotted; any deviation can lead to disqualification. Understanding these details helps you avoid penalties and keeps you focused on technique rather than outfit drama.

Choosing the right gi starts with fit. A jacket that’s too loose makes it easy for opponents to grab excess fabric, while one that’s too tight restricts movement. Look for a snug collar that stays in place during throws, and ensure the sleeves end just above the wrists. Pants should sit comfortably at the waist without sagging. Maintenance matters too: wash after each session to prevent odor buildup, air‑dry to keep the cotton from shrinking, and repair any small tears before they become bigger issues. Investing in a quality gi and caring for it properly not only extends its life but also shows respect for the dojo’s tradition. Below you’ll find articles that dive deeper into each of these topics, from the specifics of belt ranking to tips on selecting the perfect competition‑approved gi, giving you a well‑rounded view of everything you need to know about the judo uniform.