A new “Slim Size” has been added to the range, offering excellent portability. While keeping the same height as the standard 365 Days Notebook and Half-Year Notebook, the width has been reduced to create a slimmer design that is easy to hold in one hand.

Just like the existing 365 Days Notebook and Half-Year Notebook, it features paper that resists bleed-through from a wide variety of writing instruments,including ballpoint pens, mechanical pencils, fountain pens, and water-based markers. The durable cover withstands long-term use, while the binding allows the notebook to lie flat without the need to hold it down. Thanks to the ultra-thin paper, it remains surprisingly compact despite its ample pages. Combined with a timeless, minimalist design, this new slim format offers even greater ease of use.