Once upon a time, one of my students methodically spelled out a kind message to me, using many of these Super Sticky notes. She wrote the message across my eight foot window, with southern exposure. A year after this lovely gesture, the notes were still yellow (pretty vivid!) and more impressively, still all intact and sticky! Keep in mind, the year included four real seasons, several storms, and numerous precipitation events. Very impressive. Your everyday usage will surely please you just as much.