Staedtler Textsurfer neon highlighters are ideal for highlighting on any paper documents and will not smudge inkjet printouts or hand-written text. The highlighter features a large ink reservoir and is InkJet safe, meaning it does not smudge inkjet printouts and handwritten texts. It is suitable for paper, fax, and carbon copies. The twist cap allows for easy opening, and it has an ultra-soft chisel tip with a writing width of approximately 1-5 mm.