RayLineDo&reg; 80 Pages A4 5MM Squared Grid Format Engineering Notebook Project Ring Notebook Thread Binding Soft Cover Science Journal Kraft Brown - 3Pack Material: Kraft Paper,premium heavyweight paper with 80g/square meter Ivory white virgin pulp paper Size : About A4 size with 28.7cm*21cm, the size of each grid is about 5mm*5mm, squared. 40sheets/80pages. Thread Binding Soft Cover Notebook is suitable for Drawing,Engineering,Project Ring. Packing List: 3 pcs notebook in total The notebooks may gives you an Fashion feeling from inside and out.It is also a perfect gift.The one who is smart who will use the Grid Notebook. Hi, we belive you are the smart guy.