Karate Gi K-500 Mas Oyama


  • Free Shipping Deals
  • Premium Customer Service
  • Unbeatable Japanese Quality
  • The K-500 is the most legendary Full Contact Karate Gi made in Japan.
  • It's a thick but lightweight, unbleached ivory color premium Karate uniform.
  • You can mix sizes for a perfect fit and even order jacket or pants only (size chart).

The K-500 is arguably Isami's most iconic item of all times. This is the exact same dogi worn by the legendary Masutatsu "Mas" Oyama, the founder of Kyokushin. He chose it because it was the most long-lasting and easy to wear Karate Gi he had ever tried. No wonder it is to this day our most popular unbleached Karate uniform. The Isami K-500 is a strong and very durable unbleached gi for training and competition. This uniform has the perfect cut for Full Contact Karate so you can move freely and throw power kicks quickly and accurately.


  • Karate masters and senseis
  • Competition
  • Kumite

The Isami K-500 is a high quality Karate gi custom made in Saitama, Japan using the best materials and sewing techniques. The jacket is made out of 100% cotton canvas; pants are made out of 100% cotton twill. The stitch lines are reinforced, perfectly laid out and will never break. Every single detail is done to perfection. You will feel a sense of pride and the spirit of osu! and we are confident this will inspire you to train even harder.


  • If the size you want is sold out, you can pre-order and it will take us about 10-15 work days to prepare. We even send you a shipping estimate so you know when to expect it.
  • Please note that sizes 6L to 8 are made to order and cannot be cancelled or returned.
  • Once the gi is finished, we'll express ship it to you and send tracking updates by email and sms so you know when to expect delivery.


  • Check our detailed size chart and compare our numbers to your best fitting dogi.
  • You can order jacket and pants in different sizes for a perfect fit.
  • You can also order jacket only or pants only.
  • Please note that sizes 6L to 8 are made to order and cannot be cancelled or returned.
  • This gi is not pre-shrunk so it will reach the stated dimensions after 2-4 wash cycles. 

ChokeSports Isami K-500 Oyama Karate Gi

Customer Reviews

Based on 18 reviews Write a review

We want to make it as easy as possible for you to order the gear you need here at ChokeSports.com. That's why we created thresholds depending on where in the world you are...

  • Asia: Free Shipping starts at $100
  • USA, Canada, Europe, Oceania: Free Shipping starts at $150
  • All other countries: Free Shipping starts at $200

Even if your order does not qualify for the free shipping deal, you'll still get great shipping rates starting at only $19.95. During checkout you will have the option to upgrade to Express Delivery for only $7.50 (recommended).

How long does delivery take?
Express Shipping time is only 3-5 work days - sometimes faster! - but not guaranteed. Standard Shipping is 5-10 work days. Our average processing time is 2-5 work days as some items are stored in different warehouses. We process and dispatch orders on regular business days (Mon-Fri) except for national holidays in Japan.

Do you deliver anywhere in the world?
Yes! Here at ChokeSports.com we can ship orders from Japan to virtually any address in the world. As a matter of fact, we have regular customers all across the globe and ship worldwide on a daily basis.

Where are you based?
We pack and ship your order directly from our main warehouse in Saitama, Japan.

Can I track my order?
Yes! After we dispatch your order you will receive automatic delivery updates via email and sms. You can also track the order directly in our site.

Do you offer insurance?
Yes! All orders already include full insurance (even though we have never lost a package in almost 10 years). Shop with confidence!

Are import taxes included in the price?
No. You pay us only for merchandise + shipping. ChokeSports.com orders are shipped from Japan with duties and taxes unpaid. All customs, duties, taxes and brokerage fees have not been pre-paid and you are responsible for paying these at the time of delivery (if there are any). We recommend you contact the local tax authority in your area to find out in advance exactly what taxes need to be paid.

What Customers Are Saying About Chokesports

I'm always happy to open the package to discover another new obi belt. The quality is still the best, delivery time still there, and most important the service is no 1. I had communication with Lisa Andersen. She wanted to be sure that my order was the right one for my new Shodan young girl. Very dedicated to the client. Simply the best.

Ghislain F. Quebec, Canada

I've always had my eye on RVDDW and Isami brand gear but wasn't sure about how to order in the US. ChokeSports made the process extremely easy and the shipping was amazingly fast even including the time allotted for custom patchwork. Extreme recommend to anyone on the fence. Much respect always to ChokeSports.

Brandon M. Tennessee, USA

Best gi from best vendor. This is my third Isami Gi purchase from ChokeSports. I use them for Judo and BJJ. They fit the best, and they feel the best. Super fast shipping too. Rest assured I will order my fourth Isami Gi from ChokeSports in the future.

Dennis K. Texas, USA

I want to congratulate the whole company, not only for the excellent work with the black belt I bought, but mainly for the support I had from the first steps of ordering. Connor's help was valuable through the chat line, up to the emails informing me of every detail. My colleagues and I will recommend your company. Thank you!

Nikolaos G. Athens, Greece

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