A hardcover (or hardback or hardbound) is a book bound with rigid protective covers (typically of cardboard covered with cloth, heavy paper, or sometimes leather). They may have flexible sewn spines which allow the book to lie flat on a surface when opened, although most modern commercial hardcover books have glued spines.
Hardcover books are often printed on acid-free paper, and are much more durable than paperbacks, which have flexible, easily damaged paper covers and glued spines. Hardcover books are also marginally more expensive to manufacture and usually much more to purchase. Hardcovers frequently come with artistic dust jackets.
Hardcovers generally consist of pages, two boards, and a cloth covering them. Their pages are glued into a flexible piece between the boards, and it too is covered by the cloth. A paper covering, usually artistic in nature, is put over the cloth, folding over each horizonal end of the boards. On the folded part over the front cover is generally a blurb, or a summary of the book. On the back folded part is where the biography of the author and/or illustrator can be found. Reviews are often placed on the back of the jacket.