365 Grid A5 Notebook

How do they make these notebook pages so thin yet so bleed-resistant? Works well even with fountain pens!

These notebooks are somehow minimalist without being boring, and feature:

• Paper pages so thin and smooth, yet very bleed-resistant. Works well even with fountain pens!
  
  
• 365 pages, a page a day!
  
  
• Pages feature a light-grey grid so the page doesn't feel cluttered, but still features a grid for clean lists, drawings and notes.
  
  
• Every page has a header with the number and day of the week, so you can label your notes by simply circling the date.
  
  
• Great for writers, editors, engineers, artists, and everyday people
  
  
• Stitch binding that is break-proof -- open them, flatten it open and you'll never break the spine! You can even bend completely back.
  
  
• Awarded the Design Award for Excellence in the Design Department at Japan's largest stationery event "The 23rd Japanese Stationery Award."

Also check out the larger B5 version :)