Obi (sash)
Shifu: cotton warps, waste washi paper wefts

The very tightly twisted weft thread has been unrolled to reveal washi paper, and a fragment of writing in sumi ink. It was not uncommon for writing paper to be salvaged and recycled, as here, to make thread. The washi thread above is fairly robust, but very fine shifu was also made for members of the military aristocracy (with pristine washi, and often woven with silk warps).