Permanent marker, black. Line width: approximately 2 mm or 5 mm. Smudge-proof and water-resistant on almost all surfaces. Lightfast and low-odor. It takes several days to dry out without a cap. Thanks to the automatic pressure equalization, it won't leak on airplanes. The Lumocolor permanent marker 350 is excellent in terms of smudge and water resistance on almost all surfaces. It dries in seconds, making it ideal for left-handed users, with color-intensive, low-odor ink that is lightfast. The barrel and cap made of PP ensure a long lifespan, and it can remain uncapped for days without drying out. The automatic pressure equalization prevents the pen from leaking on airplanes.