Durable hard cover provides increased writing stability. Twin-wire binding allows book to lie flat when open. Right side is quad-ruled; facing page ruled for notes. Includes colored adhesive labels to customize index and covers. Microperforated pages. Double-sided pocket. Pocket-Sized Indicator: N; Book-Binding Type: Wire-O; Book-Binding Details: Twin-Wire: Hard Cover; Book-Binding Edge: Side.