Obiage is a covering sash for Obi pillow. I think this site is good to understand it what is this. Authentic one is silk 100% and made in Japan (Kyoto is best since they have nice water to dye it out then get basinful color). All of them you can use as scarf. Best Obiage’s maker is Katoman and has Rindashi (tie dyed technique) My Geisha friend only wear Obiage with Red Rindashi since it is very sexy. (If you see “Memory of Geisha” it is same idea of “Ekubo”)