The product is the seventh edition of "Calculus: Single Variable" by Deborah Hughes-Hallett, William G. McCallum, and Andrew M. Gleason. It is a textbook published by Wiley & Sons, Inc. The book is designed as a loose-leaf print. I am selling it with the binder and a few folderd, making it convenient for students to use and organize. This advanced-level math textbook covers the subject area of sine variable calculus and is written in English for adult and further education learners. The loose-leaf format allows for flexibility in studying and understanding complex mathematical concepts.