The BIC Marking Highlighter Flat contains 4 pastels highlighter pens that are reliable and versatile and consist of quick-drying water-based ink that won't bleed through paper. This pack They have an adjustable chiselled nib: just angle it for thick 4.6 mm highlighting and twist it for superfine 1.2 mm underlining. The BIC Marking Flat Highlighter brightens up your notes and neatly colour-codes them with a palette of 4 eye-popping pastel colours, yellow, green, pink, and blue.