Maruman Mnemosyne B5 Notebook - Dot Grid (Black) The Maruman Mnemosyne B5 Notebook - Dot Grid is a sleek and professional notebook designed for note-taking, brainstorming, and creative planning. Exclusive to the North American market, this fountain pen-friendly notebook features 80 acid-free sheets with a subtle 5 mm dot grid, providing the perfect balance between structure and flexibility. Each page includes "Title" and "Date/No." sections for easy organization, while micro-perforated edges allow for clean sheet removal. The sturdy twin-ring binding ensures a lay-flat design, and the durable black plastic cover offers lasting protection for everyday use. Key Features: B5 size (9.9" x 7.4")—ideal for structured note-taking, bullet journaling, and sketching. 80 acid-free, fountain pen-friendly sheets for a smooth writing experience. 5 mm subtle gray dot grid for precise alignment. "Title" and "Date/No." spaces for easy tracking and organization. Twin-ring binding ensures a flat writing surface. Micro-perforated pages for effortless, clean removal. Durable black plastic cover for added protection. Specifications: Manufacturer: Maruman Binding: Twin Ring Cover Color: Black Cover Material: Plastic Cover Type: Softcover Features: Acid-Free, Fountain Pen Friendly Line Spacing: 5 mm Number of Sheets: 80 Paper Refillable: No Paper Weight: 80 gsm Perforated: Yes Perforated Sheet - Length: 25.2 cm / 9.9 inches Perforated Sheet - Width: 16.8 cm / 6.6 inches Quantity in Pack: 1 Sheet Color: White Sheet Style: Dot Grid Size - Depth: 1.4 cm / 0.6 inches Size - Length: 25.2 cm / 9.9 inches Size - Width: 18.8 cm / 7.4 inches Standard Paper Size: B5 Weight (Without Packaging): 12.76 oz / 362 grams