The Kleid - Mnemosyne x Kleid - B5 Notebook is a top choice among experts for its meticulous design and versatility. Crafted by Maruman with 80 gsm paper and 2mm grid lines, this 7.17" x 10.12" notebook offers 70 perforated sheets for easy note-taking. Plus, with a plastic cover and fountain pen friendly paper, it's perfect for any use case.