Pen & Ink Sketch BooksA selection of pocket-sized, hard-bound books with blank, lined or grid printed pages; perfect for sketching, doodling, writing or taking notes in pen, marker or pencil. Each book features a bookmark, an expandable inner pocket and an elastic closure. The blank, lined and grid books feature a smooth surface with 54 lb. (80 gsm) or 98 lb. (145 gsm) paper. The graph sketch book features a printed grid of 5mm squares. The blank books with rough surface paper feature 75 lb. (110 gsm) paper.