Kapital CENTURY DENIM No.9 1ST Jacket - N9S13. 5oz Rigid Denim woven with mud dyed yarn, a traditional process that originated on Amami Oshima Island. A combination of Yeddo Hawthorn Tree bark and hydrated lime creates a mahogany base. The final step is to dip the yarn into a mud pit, resulting in a chemical reaction that changes the yarn to a smoky greyish black coloration. Over time, faded mahogany sashiko threads that skipped the final mud dyeing step contrast with the fully mud dyed denim,