Avery - AVE24130 Desk-style highlighters in a value pack deliver vibrant read-through colors. Improved formula allows you to leave the cap off for up to one week and still highlight. The molded chisel tip won't fray or mush. It is designed to highlight or underline. Quick-drying, nontoxic ink is ACMI certified to meet Federal standards of nontoxicity. Markers are safe for office, school or home and conform to ASTMD4236.