Spiral and Wirebound Notebook - Maruman Sept Couleur N570A-52 (Light Blue) - A4 (8.3" X 11.7") - 36 Lines (7 mm Rule) X 80 Sheets Completely flat when you open and you can easily write from side to side on paper because of spiral. Tough spiral with double metal wires. Perforation in each paper lets you separate a page from notebook as a memo pad for yourself or others. You can paste receipts, memo pads, and other papers in notebook. Spine gets thicker flexibly because of spiral binding. You can close item immediately after you wrote. Maruman-original paper absorbs ink and lets surface dry quickly. No spreads on surface and no permeation to opposite side. A4 (8.3" X 11.7"), 36 Lines (7 mm Rule) X 80 Sheets