It was not until the early 1900s , after the introduction of the judogi , that an expanded colored belt system of a
Initially the wide obi was used ; as practitioners trained in kimono , only white and black obi were used .
It was not until the early 1900s , after the introduction of the judogi , that an expanded colored belt system of a
Initially the wide obi was used ; as practitioners trained in kimono , only white and black obi were used .