YAMASAKI DELUXE COLOURED MARTIAL ARTS BELTS 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. Whether your students are starting out with a white belt or have advanced far enough to earn a black belt, the Yamasaki colour rank belts serve as an excellent motivator for enthusiastic students to focus on as they grow in their martial arts career. 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.