This Pena PF Diary Notebook, stapled, gridded, with 36 sheets, 60g paper and a 22.2x19.1cm format, is ideal for subjects that require an organized grid, such as mathematics or technical drawing, maintaining the tradition of the classic Pena diary notebook. The 60g weight ensures a paper resistant to writing, without unwanted transparency, while the compact format makes it easy to carry in a backpack. Recognized for generations as one of the reference school notebooks in Portugal, this notebook from Papelaria Fernandes is a reliable choice for students who need graph paper for their daily school life.