Kibiso thread, silk, a generous 436g. Kibiso is the first thread the silkworm produces, and it's stiff and rough, containing a high amount of sericin. This is an unrefined, hard thread. Refining it will make it a softer thread. It's an easy-to-handle thickness. It's a beautiful item, but it has been stored. It's priced around 1500 yen per 100g. - Color: Off-white - Material: Silk - Weight: 436g Thank you for looking.