The Staedtler Lumocolor permanent marker has high smudge-proof and waterproof qualities on almost all surfaces. The bullet tip has a line width of approx. 2 mm. The tip is locked so the nib will not retract inside the barrel of the pen under pressure. The polypropylene barrel and cap ensures a long service life. The pens are airplane-safe and the automatic pressure equalisation prevents the pens from leaking on board aircraft.

The ink is xylene and toluene-free and has the property of being dry safe. Dry safe means that the pen can be left uncapped for days without drying up (Test ISO 554). The ink also dries in seconds so is ideal for left-handed users. The ink is colour-intensive and low odour.