These classic highlighters by STAEDTLER are specially formulated for highlighting inkjet printouts without smudging, but also work beautifully on pens and pencils. Lightfast pigment ink is quick-drying and will last for years. Classic chisel tip writes in a 1mm or 5mm line, and dry-safe technology allows the pen to be uncapped for days without drying out. Flat barrel design contains a large ink reservoir, and twist cap with pocket clip allow for maximum comfort and performance. The airplane-safe feature in the STAEDTLER Textsurfer Classic provides an automatic pressure equalization system which prevents the highlighter from leakage at high altitudes! Can be easily refilled using the STAEDTLER Textsurfer Classic Refill Station (only available in Yellow and Blue). Length: 4 3/4" Available in Yellow, Green, Blue and Pink.