The term 'Sash on a Kimono' refers to the OBI, a sash worn around the waist of a kimono. The OBI is an important part of traditional Japanese dress and is often brightly colored and elaborately decorated. It is usually tied in the back in a large bow, and can be made from a variety of materials such as silk, cotton, or even leather. The OBI is an essential part of the kimono, and is often seen as a symbol of status and wealth.