The SUIN journal
Binder sizes by the sheet, a color system that lasts a school year, and the right pen for every page, with the numbers worked out.

What Size Binder Do I Need? SUIN Ring Sizes by Sheet Count
Count your paper once, add the sleeves and the tabs, and pick a ring that still turns its pages at the end of the term. From a loose stack on the desk to the right SUIN binder takes five steps and one sum.
9 minutes to read

How to Color-Code Binders and Dividers for a School Year with SUIN
Give each subject one color across its binder, its tab and its folder, and the right papers come out of the locker in seconds from September to June.
9 minutes to read

Which SUIN Pen for Which Page: Gel, Erasable, Fineliner or Dry-Erase
Your page decides the pen. See how tip size, paper weight and ink type play out in a journal, a binder, on black card and on a whiteboard, then match each SUIN pen to the surface it suits.
9 minutes to read