The Yamasaki Deluxe coloured rank belts are used by thousands of martial arts schools in Australia to signify the promotion of students to a higher experience rank level. It can also be used as a replacement belt for students who have lost their old karate belt. Our 100% cotton rank belts offer a winning combination of durability, comfort, function, and style. It is why so many schools choose our obi belts for their martial arts programs.