This is something I received from my teacher when I first received my certificate from the Urasenke school. (I threw away the accompanying box.) I was told it was a Ryumura product. I haven't used it, so I've kept it carefully. It's been stored for a long time, but it's as good as new and clean. ◯ Size (approximate measurements) 21.5 x 15 cm, Depth 2.5 cm I am also listing other beautiful, unused items. Thank you.