This is a square (10x10cm) resin binder made using two-part resin. The front is brown, and the back is white. I am also looking for someone to purchase the initial charm in image 5. I will change it to a charm that can be attached to the binder's ring. If you purchase it together, it will be an additional 100 yen. Please let me know in the comments. A ring will be included. Please choose from gold, black, pink gold, or silver. Please purchase only if you understand that this is a handmade item.