Customized Highlighters, Gel-Brite - Gel Highlighter & Ball Point Pen Combo - Smear-Proof & Non-Toxic, Just twist to advance! These bright, fluorescent, smear-proof gel inks have transparent, read through color that is bold enough to highlight important text without bleeding through paper! Gel inks are Non-Toxic and will not dry out - even if left uncapped! ... #6066 $1.47/each.