Calligraphy Practice Paper

I have heard and used in this document, Magic paper where you can paint with water and dry after a few seconds so you can paint again.

Its really useful for the practice of calligraphy, and also for children.

The only problem is .... I can not find anywhere!

Ive searched google and looked at all the websites in the first 5 pages. Nothing! You can buy it in America, Japan and China, but I need to ship to the United Kingdom

Does anyone know of this document? And can someone tell me if it is available in the United Kingdom?

Thank you, 10 points to a person who knows if you can get in the United Kingdom

Bookstores sometimes
art shops ..
I got some for my birthday in art shop:)
success