The refill inside can be replaced, so you can change the refill and use it as a sticker book, a schedule book, or a free notebook. It's a BIG A4 size. I purchased it almost as a custom order, so it's a rare item that you don't often see. I'm selling it to clear out my collection. It's quite heavy and substantial. Comes with a transparent cover. There is also an A5 size of the same type available (4800 yen). Size: A4, approximately 30cm tall, approximately 22cm wide.