Cotton for Karate Gi?

opr1945113

Master Black Belt
In another thread I came across this

"I know that the Japanese cotton used for gis is vastly superior to that of non-Japanese made gis, as I've owned both."


what is the difference between Japanese and non-Japanese cotton?

Why is it better?

With so many Gis being made in non-Japanese locations, such as Pakistan, is Japanese cotton exported to these other locations to be used in Karate Gis? Or only used to make Gis in Japan?

Does Japanese cotton come in different weights?
 
Cotton plants are subject to the terroir of the areas in which they grow and each region in any country will have its own unique terroir. It’s likely the Japanese were able to take advantage of those factors and crafted a unique type of cotton material.

There are some farmers that will insist they water their cotton plants with dilute beer (Suntory Malts), massage the emergent cotton buds with their fingertips (from where the cotton fibres are derived) and hire blind biwa players to regale their their crops with tales of samurai derring-do, but this is probably marketing BS. I’ve heard the carding machines in Japan use tamahagane teeth in their combs (the same steel used to make swords) which produces particularly favourable combing of the fibres. This coupled with decreased carding velocity-mechanisms than used in other countries, allow more time for the cotton fibres to align more accurately for weaving into thread. Also that thread is woven under less tension compared to modern fibres, too, so the fibres are less densely packed giving them better liquid absorption properties because of the greater available surface area availability.

Weaving methods into dōgi canvas is a bit of a secret across the various manufacturers but superficially it seems Okinawan dōgi canvas has a looser weave (denier) with fewer thread per square cm (probably a relic from less advance looms of yesteryear) producing a softer ā€˜brushed’ effect whereas the Japanese manufacturers produce a higher denier resulting in a very uniform cloth with a slight ā€˜sheen’ to it; it looks beautiful and tailors with much great finesse.

India and Pakistan are cotton material manufacturers par excellence, but their terroir is different to Japan’s so their dōgi canvas has slightly different qualities. This, together with differences in weaving technologies, will result in a different feel…not inferior, just different. Just like the terroir of French grapes and subsequent wines, very few people will be able to detect those minute differences in their singularity but they might, at best, say, ā€œThis feels different to X,Y, Japanese.ā€ I can tell, with relative ease, the origin (down to the prevailing hillside direction of the cotton plantations) and quality of cotton canvas, but I’ve been at it for many years and have read widely on the subject.

I hope all this helps.
 
In another thread I came across this

"I know that the Japanese cotton used for gis is vastly superior to that of non-Japanese made gis, as I've owned both."


what is the difference between Japanese and non-Japanese cotton?

Why is it better?

With so many Gis being made in non-Japanese locations, such as Pakistan, is Japanese cotton exported to these other locations to be used in Karate Gis? Or only used to make Gis in Japan?

Does Japanese cotton come in different weights?
Meh. Virgin cotton is virgin cotton, synthetic cotton is synthetic and just plain sucks in some way. That said. It is lighter, and keeps you a bit dryer.
 
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