Case binding is a method of bookbinding that involves attaching the book's pages to a rigid cover. This process typically uses a hard cover made of cardboard or book board, which is then wrapped in cloth, paper, or leather. The pages are sewn or glued together, providing durability and a professional appearance. This binding technique is commonly used for hardcover books, making them more resistant to wear and tear compared to paperback books. Case binding is often preferred for books that are intended for long-term use, such as textbooks and reference materials.