Maruman MNEMOSYNE Notebook Horizontal A5 - Premium Grid Notepad

In this review of the Maruman MNEMOSYNE Horizontal A5 notebook, the bottom line is simple: this is a compact, professional pad for people who sketch, plan or take structured notes and need high-quality, bleed-resistant paper. The reviewer found the 5 mm squared grid and landscape format particularly useful for mapping ideas, and the 80 g/m2 white paper stood out for smooth ink performance and minimal ghosting. If you want a durable, top-bound memo pad made in Japan that keeps notes neat and portable, this notebook delivers.

Key Features

• Landscape 5 mm grid: The 5 mm x 5 mm light gray squares give precise guidance for diagrams, tables and handwriting while remaining unobtrusive on the page.
• 70 micro-perforated sheets: Each page detaches cleanly at 148 mm x 210 mm so sheets can be handed out or filed without ragged edges.
• Premium 80 g/m2 paper: The heavier, acid-free stock provides a smooth surface with minimal bleed-through for pens, brush markers and fountain pens.
• Top twin-wire binding: The durable twin-wire system lies flat for sketching across the page and keeps the notepad compact in a briefcase or bag.
• Blank header with TITLE and DATE/NO.: Simple organization fields on every sheet make it easy to track ideas and meeting notes.
• Made in Japan: The overall design and construction emphasize consistent paper quality and attention to detail.

Who It's For

The notebook is well suited to creative professionals, designers and executives who prefer a landscape format for flow charts, wide sketches or left-handed writing. Its compact horizontal size fits easily into a briefcase or purse, making it handy for on-the-go note capture during meetings or site visits.

It may be less appropriate for those who need ruled lines for dense text or a larger A4 workspace; users who require extremely thick cardstock for heavy wet media should look for higher weight paper. For typical pen, marker and fountain pen users seeking neat, perforated pages, this is a strong choice.

Pros & Cons

Pros

• Smooth, silky-feeling 80 g/m2 paper that resists bleed and ghosting across common inks.
• Convenient landscape layout and 5 mm grid ideal for diagrams and left-handed writers.
• Micro-perforations and top twin-wire binding make pages easy to remove and keep the pad flat while working.

Cons

• Sheet size is slightly smaller than standard A5 after detaching, which may surprise users expecting full A5 dimensions.
• Seventy sheets may be limiting for heavy daily note-takers who prefer longer-lasting pads.

Specifications

Brand	Maruman
Format	Horizontal A5-style memo pad
Page size after detach	148 mm x 210 mm (5.83 in x 8.27 in)
Paper	70 micro-perforated white sheets, 80 g/m2, acid free
Ruling	5 mm x 5 mm squared grid (light gray)
Binding	Top twin-wire system
Made in	Japan

Our Verdict

The Maruman MNEMOSYNE Horizontal A5 notebook is a compact, well-made option for professionals and creatives who need a smooth, grid-guided surface for diagrams and notes. Its premium 80 g/m2 paper and clean perforations make it good value for anyone who prioritizes ink performance and tidy page removal, though users wanting larger sheets or more pages may prefer a different format.

Frequently Asked Questions

Is the paper good for fountain pens?
The 80 g/m2 paper performs well with fountain pens, offering minimal bleed and reduced show-through compared with lighter stocks.

Are pages easy to remove cleanly?
Yes, each sheet is micro-perforated so pages detach neatly at the listed post-detach size.

What is the exact page size after detaching?
Detached sheets measure approximately 148 mm x 210 mm, slightly smaller than standard A5.