Maruman Mnemosyne A5 Notebook - Lined (Black) The Maruman Mnemosyne A5 Notebook - Lined is a sleek and professional notebook designed for structured note-taking, journaling, and brainstorming. Featuring 80 acid-free sheets with 7 mm gray ruling, it includes bolder dividing lines for enhanced organization. The "Title" and "Date/No." spaces at the top of each page make it easy to categorize notes, while micro-perforated pages allow for clean and effortless removal. Built with a sturdy twin-ring binding and a durable black plastic cover, this notebook lays flat for a seamless writing experience, making it an excellent choice for professionals, students, and creatives. Key Features: A5 size (8.3" x 6.2")—perfect for everyday note-taking. 80 acid-free, fountain pen-friendly sheets for a smooth writing experience. 7 mm gray ruling with bold dividers for organization. "Title" and "Date/No." spaces for easy reference. Twin-ring binding for a flat, comfortable writing surface. Micro-perforated pages for clean, effortless removal. Durable black plastic cover for long-lasting use. Specifications: Manufacturer: Maruman Binding: Twin Ring Cover Color: Black Cover Material: Plastic Cover Type: Softcover Features: Acid-Free, Fountain Pen Friendly Line Spacing: 7 mm Number of Lines: 24 Number of Sheets: 80 Paper Refillable: No Paper Weight: 80 gsm Perforated: Yes Perforated Sheet - Length: 21.0 cm / 8.3 inches Perforated Sheet - Width: 13.8 cm / 5.4 inches Sheet Color: White Sheet Style: Lined Size - Depth: 1.4 cm / 0.6 inches Size - Length: 21.0 cm / 8.3 inches Size - Width: 15.8 cm / 6.2 inches Standard Paper Size: A5 Weight (Without Packaging): 8.88 oz / 252 grams