Agatha Ruiz for Miquelrius Spiral Bound Notebook, Cubes (6.5" X 8", 4-Subject, Graph/Grid 140 SHEETS) Medium 4-Subject notebook; 140 sheets/280 pages (color subsection of blue, red, grey, green) Extra opaque 70gr/m2 paper; 5mm grid ruled; header for titles Micoperforated pages for easy detachment; hole-punched for filing Opaque polypropylene cover; Made in Spain Coil binding which allows the notebook to be opened flat and to make 180 degree turn