Memos are eco-friendly reusable sticky notes made to stick to any surface.  They are portable, flexible mini-whiteboard sheets with a PET film backing to make them like a sticker.  Memos are proven to last with writing for more than 5 days without any dust accumulating and no staining when used with whiteboard markers.  Each pack contains 20 (0.5 inches thick) sticky notes.  Sticky notes can promote critical thinking, collaboration, proficient notetaking, and tidiness.