Notebook. Durable, reusable protective cover with interchangeable paper insert. Ready to use, filled with holding and closure elastic bands. Format: A5, with 40 sheets (80 g/m²) graph paper 5 x 5 mm. Wood-free paper with rounded corners. Available in black and red. With this notebook from Herlitz, you can customize your notes to your liking. The notebook features a changeable cover and rounded corners. The first 40 sheets are included, but can be individually expanded and swapped out, as they are simply held in place with an elastic band.