Miquelrius notebook, A4 size (210 x 297 mm). Covers: translucent printed 0.8 mm thick polypropylene. Spiral: continuous metal spiral that allows the notebook to open flat, as well as turning all the way around, and with a coilock closure that prevents snagging. Inner paper: 70 g/m² extra opaque, prevents ink bleed-through and dries quickly. Sheets: 120 sheets with colored stripes on the side (4 colors, 30 sheets per color), ideal for classifying notes and using one color for each subject; header for titles; micro-perforated for a clean start and 4 holes for filing. Ruling: squared 5 mm.