For enduring ideas, you want enduring ink. This Large Marker delivers permanent ink in rich colors so your notes are conveyed with authority. The ink is low-odor and certified nontoxic. The chisel tip allows you to vary the width of your strokes, from thin lines for small writing spaces to broad ones when you’re commanding the attention of a room. The nontoxic formula is suitable for use by both adults and children, so you can make your mark at home, in school or at work.