A5: 148mm x 210mm 100 pages (50 sheets) 4mm grid (The layout is indicated on the corner of the cover) Made with 140g/m² Reservoir Paper, it provides a clean, stable writing experience with fountain pens and a wide range of writing instruments: Minimum feathering and show-through. Also recommended for dip pens. The wirebound construction allows the notebook to open completely flat, offering ease of use and a comfortable writing experience.