Isami Black Belt Master

Made in Japan

Sale price$79.95
Made to Order (20-30 work days)


  • These are literally the most premium black belts we make. With one of these master black belts tied around your waist everyone will immediately get the feeling that "it's more than just a belt".
  • For an elegant, timeless look choose a silk or satin belt with a unique shine unlike any other belt you've ever seen.
  • Or display a deeper meaning with our red core belt that's wrapped in a textured fabric with beautiful patterns.
  • The special fabrics we use make these belts fray faster than regular cotton belts. They age beautifully and give a true sense of martial arts mastery.
  • For the ultimate level of customization, use the belt builder tool on this page to preview your new belt with beautiful embroideries and stitched degrees. Get it now!

⭐⭐⭐⭐⭐ Yoshi T. from USA
"Osu! I am very impressed for the love of detail. These are the ultimate belts money can buy."

⭐⭐⭐⭐⭐ Robert C. from UK
"Outstanding quality. Having just received my belt from you, I am amazed by the workmanship that has gone into it, just beautiful!"

⭐⭐⭐⭐⭐ Alice from USA
"I gave this belt to my husband for his Karate promotion. He said that after 15 years of training this is the best black belt he's ever had."

BELT MODEL: Which one is right for you?
➡️ F-1000 is a stiff black belt made of silk and the most premium model we make. It has a unique shine and texture that stands out everywhere. When this belt starts to fray, the white inner core will show. It's 42mm 1.65in wide with 13 stitch lines.
➡️ F-500 is a more affordable version of the F-1000 belt: it's a stiff belt made of shiny satin fabric. When this belt starts to fray, the white inner core will show. It's 42mm 1.65in wide with 9 stitch lines.
➡️ F-910 is wrapped in a textured fabric that will fray faster than standard belts in order to show the red core. The red core symbolizes your dedication to the martial arts and we hope it will inspire you to train harder. It's 42mm 1.65in wide with 9 stitch lines.

⏲️ It takes 20 work days to custom make your new belt, but we also offer a rushed service (10 work days) for urgent orders. 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 these belts 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 belt, no changes will be accepted. All sales are final.
🤩 We guarantee the wait is very much worth it: we'll custom make the belt exactly the way you want it!

Our Isami Black Belts feature integrated embroideries. This is the most premium method of embroidery and also the most resistant. We embroider the fabric first and then we make the belt. There will be no trail on the reverse side, but the belt stitch lines will be over the embroidery. The final product is unique and stunning!

Show your hard earned rank with stitched degrees that will never fall off, unlike the usual sports tape stripes. You can choose the color of your stripes to perfectly match your martial art and attitude.

Your new Isami Black Belt will shrink naturally due to humidity and sweat. That's why we say in Japan that "the fabric is alive". Below you'll find our estimated shrinkage rates for each model. Please take this in consideration when selecting your optimal belt size...
F-1000: 4%
F-500: 5%
F-910: 5%

In Japan it is uncommon to wash the obi martial arts belt. However many of our international customers like to wash their belts. We recommend hand washing (with hand soap) and hang drying in the shade. Please note that regular washing will accelerate the belt's aging process and might cause it to shrink further than estimated. It will still be functional and last for many years though.

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