Ink won't smear or smudge pen, marker or inkjet inks, making them perfect for working or studying Highlight key passages with an eye-catching fluorescent yellow ink that doesn't bleed through most paper Highlighter pens can be left uncapped for up to one week without drying out Nib won't fray whether you highlight, underline text, or use for artistic sketching Durable chisel tip marks in a variety of widths