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 & 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 & children, so you can make your mark at home, in school or at work. Marker Ink Type: Permanent; Marker Tip Type: Chisel; Marker Tip Size (text): Broad; Marker Color(s): Black.