What is a book jacket?

A book jacket is a protective covering that wraps around the outside of a book to protect it from wear and tear. It often includes important information about the book, such as the title, author, and publisher. In addition to providing essential information, book jackets are also used as a marketing tool to attract potential readers. They often feature eye-catching visuals, such as illustrations or photographs, that give readers a glimpse into the book's content. Book jackets can also include praise from reviewers, a summary of the book's plot, and biographical information about the author. Overall, book jackets play an important role in drawing readers in and enticing them to pick up the book.