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Is That Hitokoshi Chirimen Really Silk? The White Fabric of Nagahama
In the world of tsumami-zaiku (a Japanese art of folding small squares of silk into flower petals), "hitokoshi chirimen" is a well-known, trusted fabric name. People searching for materials mention it to us often in class.
But there's something we want to say plainly.
Much of what's sold today as "hitokoshi chirimen" is actually rayon or polyester — synthetic fiber, not silk.
What chirimen actually is
Chirimen is a silk fabric woven from tightly twisted thread. After weaving, the twist tries to unwind, and that tension puckers the surface into a fine texture called shibo. That soft, slightly crinkled character comes from this process.
"Hitokoshi" (literally "one throw") refers to the weave itself — the weft thread is thrown in one at a time, alternating, which produces a finer shibo and a more refined finish.
In other words: both "chirimen" and "hitokoshi" originally describe a silk fabric. Neither name was ever meant to describe synthetic fiber.
Is that hitokoshi really silk?
But the name has drifted from the fabric it originally described, and synthetic fiber is now widely sold as "hitokoshi chirimen." It's inexpensive, easy to handle, and genuinely convenient.
What we want to offer, though, is pure silk — what's called hon-hitokoshi (true hitokoshi).
Real silk has a refined sheen and hand that synthetic fiber can't reproduce. Because silk absorbs dye deeply, colors come out clear rather than muddy, and it resists creasing better than synthetic fiber. And because it's undyed white fabric, you can dye it any color you choose, by hand.
About Nagahama, where this fabric is made
The hon-hitokoshi we carry at Oharibako comes from Nagahama, Shiga.
Nagahama was once Japan's leading chirimen-producing region, with a history of roughly 250 years. A single weaving house would handle everything in-house — sourcing high-quality raw silk thread, twisting it tightly, weaving, and finishing — producing some of the finest undyed silk in the country.
As demand for traditional Japanese dress declined, production kept shrinking. Today, all varieties combined amount to roughly 8,000 bolts a year.
Even so, seven weaving houses continue to weave this fabric at its highest level.
Only white fabric that has passed the weavers' cooperative's scouring inspection may be called Hama-chirimen. Each bolt carries the marks of that inspection: "Hama-chirimen," "100% pure silk," "Silk of Japan."
Why this matters to us
Even under these difficult conditions, the fabric itself is genuinely exceptional.
We didn't start carrying this white fabric simply to add another product. We wanted more people to know this is real silk. That's the whole reason.
A production region disappears once no one is left to use what it makes. Buying it is how it survives.
Sold by the length, from 30cm
Buying an entire bolt at once takes some commitment. So we also sell it by the length — from 30cm.
Because it's undyed white fabric, it's well suited to anyone who wants to start with dyeing it themselves — for tsumami-zaiku, for kimono accessories, or for your own projects.
About Oharibako (Kyoto)
Oharibako has been making kanzashi and kimono accessories in Nishijin, Kyoto, for 80 years. Every material we carry is something that's actually on our workshop table.
For more on choosing fabric for tsumami-zaiku, see our article on the difference between pure silk and synthetic fabric.