dnoexis

I own shuiredo new wave 3 I would recommend it as a heavy material, but in fact it's very light and I don't think it's cotton It is comfortable, good data form when wearing and has subtle kata snap effect and note that shuiredo's uniform is usually 1 size bigger than other Japanese clothes The only downside is that it's too expensive (but it's good for anyone who doesn't pay attention to the price)

https://www.tokaidojapan.com/custom-tailored-uniform/ they have tailor-made service, if only pants I think the cost will be cheaper. Contact them and they will be happy to guide you