a5 connell loose-leaf removable notebook notepad a4 fresh grid noteboy notebook for correction blank book customization a5康奈尔活页可拆卸笔记本记事本a4小清新网格本错题本空白本定制

white shell + horizontal line inner core white shell + mesh inner core white shell + kangjuer inner core white shell + error correction inner core white shell + blank inner core black cover + horizontal inner core black cover + mesh core black cover + kangjuer inner core black cover + error correction inner core black cover + blank inner core horizontal inner core mesh core kangjuer inner core error correction inner core blank inner core separated pages (2 pieces) white shell black cover

a5(80g 60 sheets) a4(100g 45 sheets) b5(80g 60 sheets)