Pure silk. I think the last four photos are the closest to the actual color. I'm not sure how to measure a Nagoya obi, so please consider these measurements as a reference. Otaiko (back) section: 30.3 x 109.2 cm (from the top of the triangle to the tip of the tare) Waist section: 245 cm (from the top of the triangle to the tip of the tesaki) The scent of camphor remains. There don't seem to be any noticeable flaws, but the last two photos show minor scratches that are visible to the untrained eye.