Thank you for viewing! (*^^*) This is an adult heko obi (soft sash). It's a reversible obi made of two types of fabric, including cotton. It is not a ready-made obi. No interfacing is used. Size: Approximately 16 cm x 500 cm. Please understand that there may be some imperfections due to the fact that it is handmade. It is a soft obi. I think it would be nice to use it with a single-layered kimono or yukata in the coming season. Thank you very much. (*^^*)