This is a set of 4 A4-sized, 1.0mm thick, natural undyed cowhide leather (Tanro) from domestic Japanese beef. Tanro is an abbreviation for tannin-tanned leather, suitable for wax-resist dyeing. These are direct purchases from a Japanese wholesaler that handles domestic tanner products. Please note that as these are natural materials, there may be tiger stripes, scratches, and wrinkles. Perfect for leathercraft and handmade projects.