Isami Karate Gi Mas Oyama

Japanese Classic
39 reviews

Model: K-400 Classic
Jacket: 3 150cm 4'11"
Pants: 3 150cm 4'11"
In stock


  • Now you can have the authentic Isami Karate Gi worn by the legendary Masutatsu "Mas" Oyama, the founder of Kyokushin. 
  • This is a high performance Full Contact Karate Gi handcrafted in Japan in traditional unbleached ivory color (see full specs below).
  • Carefully designed so you can move freely and hear the gi snap when kicking and punching.

⭐⭐⭐⭐⭐ Jonathan M. from USA
"This gi is a piece of art. Incredible quality, better than I imagined. Sizing chart is quite exact and the gi looks like it was tailored for me. Quality of the fabric is impeccable. Very stiff cotton for the top which makes the gi feel like a warrior armor and very light and soft premium cotton for the pants which makes it very light and comfortable."

⭐⭐⭐⭐⭐ Christopher S. from USA
"First of all, best dogi I have ever owned. So strong and thick, yet still so easy to move in and so much room. Expertly tailored and stitched for knockdown competition. I highly recommend this dogi and ChokeSports!" 

⭐⭐⭐⭐⭐ John K. from USA
"Absolutely love my new gi. Everyone in the dojo is now getting one. Perfect fit to the measurements in the ordering size chart and prompt delivery from Japan. It is the most comfortable gi I have worn. Very happy. Osu!" 

▶️ Click here to add Custom Embroidery in English and in Japanese.
▶️ Click here to request Size Adjustments for a perfect fit.

🌟 The Isami Karate Gi Mas Oyama is the most famous and iconic uniform is our lineup. Model K-400 Classic was the first Isami Karate Gi Sosai Oyama wore. He eventually switched to the upgraded version called K-500 which he considered the most durable and comfortable Full Contact Karate Gi he had ever tried. Make no mistake: this is a premium unbleached karategi made in Japan for karateka who demand the best. We hope the spirit of osu will inspire you to fight harder!

Authentic Karate gi custom made in Japan. This is the hardest model in our line up, and yet extremely comfortable to wear. The jacket is made of 100% cotton canvas; pants are made of 100% cotton twill. The stitch lines are reinforced, perfectly laid out and will never break. 

Slightly softer than the K-500 and Sosai Oyama's original Karate gi. The fabric is Japanese (jacket 100% cotton canvas, pants 100% cotton twill) and the uniform is assembled in Vietnam. Please note that sizes 0-3 come with an elastic waistband, whereas larger sizes feature the traditional drawstring.

⏲️ The Isami K-400 Classic is usually in stock and ready to ship, whereas the Isami K-500 Mas Oyama takes approximately 10-15 work days to custom make in Japan. The whole process is handmade and we always have many orders waiting in line. We will send you a completion estimate a few days after the order is placed so you know when it will ship.
✅ Because the K-500 Gis are made to order and unique, they cannot be returned or exchanged. So please make sure to double check all the details before completing your order. Once we start working on the Gi, no changes will be accepted. All sales are final.
🤩 We guarantee the wait is very much worth it: we'll custom make the Karate gi exactly the way you want it!

    As of April 2018 we have updated our sizes so that all Isami Full Contact Karate Gis at follow the same size chart. So please make sure to check the detailed dimensions in our new size chart to find the best fit for your body type. If needed you can mix and match jacket and pants in different sizes for a perfect fit.

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