Mas Oyama's favorite Karategi: Isami K-500
ChokeSports.com is one of the major suppliers of Karate gis and belts to famous fighters, senseis and organizations all over the world. In fact our parent company Isami has a very long and deep history with Kyokushin Karate in Japan.
Sosai Masutatsu Oyama, founder of the Kyokushin Karate style, was an acquaintance of Mr. Shigeyuki Iso, Isami's president. At first Sosai Mas Oyama would wear our unbleached full contact dogi Isami K-400 Classic. This is Isami's most traditional Karate uniform. He later switched to the newer and improved version: Isami K-500 (which we now call "Mas Oyama"). He chose it because it was the most long-lasting and easy to wear Karate Gi he had ever tried.
As the K-500 became Sosai Mas Oyama's favorite uniform, Isami decided to provide a bunch of sets for him to wear during the year. He would use a brand new dogi for a while and then pass it along to his Deshi (pupil) as a present. That's how the Isami K-500 reputation started to spread in Japan. To this day it is a symbol of Karate Ka who are striving in training. Despite the recent growing popularity of bleached white Karate Gis, some people in Japan will only wear the Isami K-500 (unbleached).
Sosai Mas Oyama used to say: “Train hard, and train until the dogi color becomes white”. What he meant was that unbleached ivory Karate Gis like the Isami K-500 and Isami K-400 will eventually become white after repeated training and multiple washes.