The product is a paperback book titled "The Unknown" by Katherine A. Applegate, part of the Animorphs series published by Scholastic in 1998. It is written in English and is not a textbook. The book is part of the ongoing Animorphs series, which follows the adventures of a group of young humans who transform into animals in order to protect the world from dangerous enemies. The book is likely to be filled with action, adventure, and themes of friendship and empowerment, making it an engaging read for young readers.