This project is the first series to introduce the high techniques of Japanese factory craftsmen to the world.


We are a team to bring to the world the work of craftsmen who are highly skilled but have not been in the spotlight.

We hope to use the success of Kickstarter as a springboard to build a system and platform to introduce their work to the world.

Here are some unparalleled belts made by Japanese craftsmen.

This is probably the world's first adjustable belt with a screw fastening mechanism , which is patent applied for in Japan.

Despite its novel function, the buckle is cast, the screws are machined, and the belt is handmade, giving this belt an aspect of craft and artistic beauty that incorporates the skills of craftsmen.

An original design sheet for this product can be added to the belt, creating additional artistic enjoyment.

The design sheets will be sold in a variety of patterns and materials, so you will never be bored with the designs.

The belts are carefully made one by one by leather craftsmen in a factory located in Sumida Ward, Tokyo, one of the three major leather production areas in Japan.

The belts are made of genuine cowhide leather, so you can enjoy the unique depth and luster of genuine leather for a long time.

 The leather industry in Sumida Ward has a long history, dating back to the military industry of the Edo period, including armor and swords.

The frame of the buckle is also made at a casting factory in Sumida Ward. The buckle is made with the traditional casting technique used in harness manufacturing.

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The screws are individually machined using the most advanced cutting technique at our factory in Ota Ward, Tokyo, an area where precision parts for aircraft and medical equipment are made.

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A beautiful "craft" with three parts, each with their own specialties.

MUDANKAI, a patented reversible design infinitely adjustable belt born from a Japanese factory, is an innovative belt that brings together the techniques of town factories.

We would like to make a belt that would allow us to enjoy the craftsmanship of the product, so we created a customizable design that allows us to enjoy the DIY process.

You can choose between a brass or aluminum buckle, and customize it to your favorite to create a one-of-a-kind belt.

You can choose from two types of belts: a reversible belt or a single leather belt.

The reversible type allows you to use the side you like depending on your mood, scene, or outfit, so you can enjoy a variety of fashions with just one belt.

 All the parts can be taken apart, so you can change the material of the plate, or change the knurled screws for a different pattern to be released later.

You can also customize the buckle by inserting a design sheet between the three layers of buckles.

As you can see, MUDANKAI offers an unparalleled level of customization that allows you to express your personality.

You can DIY with a design sheet of all materials.

In order to use MUDANKAI for a long time, we aimed to create a design that is expandable and developable.

MUDANKAI is an innovative item that has been applied for a patent in Japan that has a special structure allowing for stepless adjustment to fit any style.

Special patent-pending structure that can be released and fixed by twisting the screw.

This structure allows for stepless adjustment without any size adjustment holes. Special structure with no holes, infinitely adjustable to fit every body shape.

Easy to adjust! Can be removed smoothly at any time!

Don't waste your money buying a new belt every time you change your body shape.

You can change the size smartly when your body shape changes or when you eat a little too much food.

The brass used in MUDANKAI refers to an alloy made by mixing copper and zinc.

The name of the alloy varies depending on the percentage of zinc content. If more than 20% of the material is zinc, it is called "brass”.

Brass is also a very familiar metal to Japan, and has been widely used for gold coins since the mid-Edo period, and is also used for wind instruments, high-grade building materials, and Buddhist altars.

Unlike plating, brass is a metal, so the surface will not flake off, and you can feel the charm of the metal itself.

Brass is also an attractive metal that can be enjoyed as it ages. The more you use it, the deeper the flavor and the more you will enjoy its antique look.

Aluminum is very light compared to other metals.

Aluminum is also a metal that can naturally prevent rust and corrosion by producing its own film, called an oxide film.

Since there is no concern about discoloration even after long use, it is used in aircraft and medical equipment.

Manufacturer & country: Japan

  • Buckle materials:  Brass(137g/0.3lbs)/Aluminium(45g/0.1lbs)
  • Belt material: Cowhide
  • Screw materials: Stainless steel, aluminum, brass
  • Belt width: 35mm (1.37 inch) /  30mm (1.18 inch)
  • Belt length: 
  • - M  (Applicable waist 76-84cm) (Applicable waist 29.9-33.1 inch)
  • - L   (Applicable waist84-94cm) (Applicable waist 33.1.9-37 inch)
  • - XL (Applicable waist 94-104cm) (Applicable waist ト37-40.9 inch)

Our mission is to share with the world the work of artisans who have high skills but have not been in the spotlight.

More than 99% of the factories in Japan are small and medium-sized enterprises called "machi-kouba". These factories are often subcontractors to large corporations, and although they have the high quality techniques to meet the demand of large corporations, their techniques are rarely known to the world.

Under the theme of "Techniques of Town Factories x Design”, we visit each factory to learn about their history and achievements, and listen carefully to their specialties in processing and materials.

Inspired by the communication with the factories, we dig out the products that need to be made.

This project is the first Kickstarter for our activities.

We hope to use the success of the Kickstarter as a foothold to build a system and platform to introduce the work of Japanese craftsmen to the world.

A designer who continues to work with artisans in town factories to create products.

He considers design from a wide range of perspectives, including planning, design, branding, patents, public relations, and sales.

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Twitter: @PitAPat_tokyo

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