These jeans are hand dyed in indigo vats and mud ditches by artisans who still practice the technique of mud dying. Mud dyeing was used for achieving black before it was replaced by sulfur dye, and this technique is still practiced in Japan. Although there have been some minor changes, the technique basically remains the same. Here is what an artisan has to say about the technique…
Scans from Free and Easy magazine (thanks to Opie from Superfuture).
Buy the jeans here.