vermilion CROCO CARD POUCH, black, retail price 64,900 yen. The size is approximately 14cm wide and 9cm long. The leather is "crocodile," the king of exotic leathers, dyed using the traditional Awa Tokushima technique of "shoen dyeing." What is Shoen? Shoen (松煙) refers to the soot produced by incomplete combustion of pine roots or pine wood. It is used to make ink and was also used for dyeing during the Edo period. "Shoen dyeing" uses the soot dissolved in water as a dye and involves multiple dyeing processes. Because the dyeing process takes a long time, it has a depth of color inherent to ink, unlike "black."