Pennarello indelebile Sharpie Magnum

I'm a teacher and these have been a lifesaver for making hallway signs and classroom banners — that oversized tip lays down such a wide, bold line that the kids can actually read from across the room. The ink supply really does last forever, too; I've used one for weeks of projects and it's still go

The oversized tip lays down lines so wide I barely have to press, and the ink supply seems endless for making classroom signs. Only wish the barrel had a clip to hang it up, but for the price it does the job well.