This blank book is the XL version of the original "Mathematical Notebook". The book is formatted so as the owner to be able to write numbers and mathematical calculations. The XL version is larger (8.5"x11" or 21.59x27.94cm) than the original. It comes with matte cover and the template inside the book is made of larger boxes. The price though remains the same with the original version. Another creation of Lazaros' Blank Books. Enjoy.