Maruman Mnemosyne B5 Notebook - Lined (Black) The Maruman Mnemosyne B5 Notebook - Lined is a sleek and professional notebook designed for students, creatives, and professionals who need a structured writing tool. Named after the Greek goddess of memory, this high-quality fountain pen-friendly notebook ensures a smooth writing experience with its 80 acid-free sheets. Each 7 mm lined page features two bold dividers that organize notes into three sections of ten lines, making it ideal for categorized note-taking. The "Title" and "Date/No." spaces at the top of each page help with easy referencing. The micro-perforated pages allow for clean removal, while the sturdy twin-ring binding and durable black plastic cover provide long-lasting protection. Key Features: B5 size (9.9" x 7.4")—perfect for structured note-taking and journaling. 80 acid-free, fountain pen-friendly sheets for a smooth writing experience. 7 mm gray ruling with two bold dividers for organized notes. "Title" and "Date/No." spaces for easy tracking. Twin-ring binding allows the notebook to lay flat. 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: 7 mm Number of Lines: 30 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 Sheet Color: White Sheet Style: Lined 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): 12.77 oz / 362 grams