I purchased this a while ago from a shop called Shugel-san. I wanted to do tsumami zaiku at the time, but I got busy and never even opened it. However, the vinyl has deteriorated over time, so I've listed it as "like new." The material is likely rayon. The size is approximately 30 cm x 20-22 cm. It was about 1500 yen for a set of 10 at the time. It's a bit large, so I will ship it folded in half. I hope someone can use it.