Thank you for viewing. This is a textbook used in a cram school. It's clean with no writing inside, but it was used by a child. Please understand this before purchasing. You can view the publisher's textbook introduction page with the QR code in the third photo. A colorful textbook perfect for science study. - Title: Winning Science 2 Color Edition - Size: Approximately 1.5cm thick - QR Code: 216-402