With these books, you may choose from a 1 page lined, 1 page blank format or a 2 pages lined, 1 page blank format. They are created for classes where a lot of text is written and a few detailed pictures are created. They come with or without onion skin papers which are thin sheets that separate a lined page from a blank page to keep artistic work from rubbing on the opposite page. Books are covered with a 280 gsm (90lb.) heavy card stock cover to protect their valuable contents.Pack of 10 books. 48 pages, A4, portrait format (8.27x11.69 inch), 1x1(= 1 sheet lined, 1 drawing sheet), no onion skin, red.