Since it can be opened flat, it is easy to write on, and it can be folded over compeletly so you can use it comfortably in narrow spaces. A proprietary design from Kokuyo, which makes you won't have to worry about your hands on the ring when you are writing. Dot ruled lines is adopted for writing beautifully, and they are thin printed so you don't have to worry about they are getting in the way. Allows you to neatly separate only the pages you need. Use it as a small note or as a memo, or discard unnecessary pages. 80 notebook pages for plenty of writing. It is especially recommended for those who usually take a lot of notes for work, hobby, study, etc.