Hardy hardcover notebooks have been designed with thoughtful choices and attention to detail. The unique index corners allow you to easily locate your notes. The expanding pocket stores odds and ends-a handy place to keep pens and highlighters on the go. Double-wire binding allows pages to lay flat for easier note taking. Pocket-Sized Indicator: Yes; Book-Binding Type: Wire-O; Book-Binding Details: Twin-Wire: Hard Cover; Book-Binding Edge: Side.