The Original highlighter with vibrant read-through colors and a molded chisel tip to highlight or underline. Durable plastic tip for smooth highlighting - won"t fray or "mush". Improved formula allows you to leave the cap off for up to one week and still highlight. Quick drying, non-toxic ink. Conforms to ASTM D4236. ACMI certified to meet Federal standards of non-toxicity; safe for office, school, or home. Box Tops for Education on select items.