b5 non-slip loose spiral notebook, detachable notebook book, minimalist coil-bound, specially for university, junior high school, and senior high school students

[solid white] 2 shell +2 buttons [solid black] 2 shell +2 buttons [pink] 2 shell +2 buttons [retro red] 2 shell +2 buttons [retro green] 2 shell +2 buttons [yellow] 2 shell +2 buttons [light blue] 2 shell +2 buttons [dark blue] 2 shell +2 buttons [light green] 2 shell +2 buttons [light purple] 2 shell +2 buttons [transparent white] 2 shell +2 buttons [beige] 2 shell +2 buttons [transparent black] 2 shell +2 buttons inner core 1 book 60 sheets [horizontal line]]

a5 b5 a4