Thank you for looking. This item is made of three types of cotton fabric. It is reversible. No interfacing is used. It is a single long obi. There is a seam. Size: Approximately 16 cm x 400 cm. Please understand that there may be some imperfections due to the fact that it is handmade. ★ This is a soft obi. It would be nice to wear it with a single layer kimono or紬 (tsumugi) for the coming season. Thank you.