The Staedtler Textsurfer Classic 364 highlighter is designed with a large ink reservoir for extended highlighting performance. The fast-drying pigment ink is light-fast and will not smudge ink-jet printing or most handwritten inks. It even features an automatic pressure equalisation system that prevents the highlighter from leaking on board an aircraft. The design is refillable with the Staedtler Textsurfer Refill Station and features a handy clip on the cap.