Staedtler textsurfer classic even performs perfectly on inkjet print-outs without smudging the ink and with the highlights still remaining visible after photocopying | Highlighter with large ink reservoir for extra-long highlighting performance | INKJET SAFE - does not smudge inkjet printouts and handwritten texts | For paper, fax and carbon copies | Twist cap for easy opening | PP barrel and cap guarantee long service life | Airplane-safe - automatic pressure equalization prevents pen from leaking on board aircraft | Fast-drying | Refillable | Pack of 4