Dust jackets are a protective covering for books, usually made of paper or cloth. Synonyms for dust jackets include book covers, book wrappers, book jackets, and book sleeves. Book jackets are typically designed to advertise the book's content and author, with artwork, a summary, and critical praise. They can be removed or left on the book for protection and aesthetic appeal. Book covers, on the other hand, can refer to a wide range of protective coverings, including hardcovers, paperbacks, and leather bindings. Book wrappers and book sleeves are generally more temporary and less elaborate than dust jackets, often being made of plastic or simple paper.