Yamamayu (wild silk), chirimen (highly twisted silk), wata (waste silk)
Woven, lightly padded

In this kimono, the threads that appear white are actually colorless, and reflect light.  Called yamamayu (literally, mountain silk cocoons), these fibers resist the absorption of dyes.  A whole cloth can therefore be immersed in a single dye bath, but the cloth that emerges will have a plaid effect if yamamayu threads have been used at intervals in the warps and wefts, as seen here.