Sharpie Gel Highlighters use an advanced ink-free technology to leave bright, clear marks that won’t bleed through paper and resist smearing across pen, marker and ink jet inks. These Sharpie highlighters advance with a simple twist and won’t dry out even if you leave them uncapped for days. The slim design is easy to maneuver while the bullet tip is great for both highlighting and underlining text. Ink-free technology delivers total smear protection across pen, marker and ink jet inks Won’t dry out: can be left uncapped for days Smooth-glide gel tip creates clean marks on all paper surfaces, including glossy Gel stick formula won't bleed through paper Includes 5 Sharpie highlighters in assorted fluorescent colors: pink, yellow, orange, green, and blue Conforms to ASTM D4236 standards. For detailed information see www.astm.org. ACMI Certified AP Nontoxic. For detailed information see www.acmiart.org. Less harsh chemicals - made with fewer harsh chemicals, or safer chemicals than typical alternatives, helping reduce your use of and exposure to substances that may be more harmful to your health and the environment.