The size of the notebook pad is 4. 5*1. 5cm. Perfect for students, teachers, office, home and so on. Especially a must-have for students & teachers. Every student or teacher in high school or college should own these. They're extremely useful for taking down important notes, lesson/project/essay/test/other planning, and generally placing important information down on a note that won't misplace itself in your planner or notebook.