Japan has two textile regions that are largely unknown outside the industry: Nishiwaki in Hyogo Prefecture, which has been producing cotton and cotton-blend fabrics since the Meiji period, and Kiryu in Gunma Prefecture, which built its reputation on silk and later adapted to synthetic fibres for swimwear and activewear. Pulse Mind Wave Tech sources fabric from both, and the distinction between them shapes what each piece in the collection feels like.
Nishiwaki: cotton and cotton-blend weaving ¶
Nishiwaki's textile industry developed in the late nineteenth century around the production of Banshu-ori, a plain-weave cotton fabric traditionally used for shirting. The mills have adapted over the decades to produce a wider range of cotton and cotton-blend fabrics, including the cotton-modal blend used in the Shiro bralette and the Sora soft cup bra. The modal component is sourced from Austrian beechwood pulp and blended at the mill. The resulting fabric has a weight and warmth that pure cotton does not achieve.
Kiryu: from silk to technical swimwear fabric ¶
Kiryu was a silk-weaving centre from the Edo period through the early twentieth century, producing fabrics for the kimono trade. As demand for silk declined, the mills adapted to synthetic fibres, and Kiryu is now one of the primary sources of high-quality polyamide swimwear fabric in Japan. The mill we work with has been producing swimwear textiles since the 1960s. Their 228 GSM polyamide is heavier than most swimwear fabric on the market and holds its shape and colour through repeated saltwater and chlorine exposure.
Why sourcing locally matters for quality ¶
Working with mills in Japan rather than sourcing fabric from overseas suppliers gives us a level of access and communication that is difficult to replicate at a distance. When the Kiryu mill developed a new matte finish for their polyamide last autumn, we were able to visit, test samples, and place an order before the fabric was available to international buyers. This kind of relationship takes years to build and is one of the reasons the collection looks and feels the way it does.
What this means for the pieces you buy ¶
Every product page on this site lists the fabric composition and origin. This is not a marketing exercise. It is information that is useful when you are deciding whether to buy something and when you are caring for it at home. Fabric from Nishiwaki and Kiryu is not inherently better than fabric from elsewhere; it is specific, and we know exactly what it is and where it came from. That specificity is what we are selling.
If you have questions about the fabric in a specific piece, email us. We will answer in detail.