The Lumocolor Permanent Marker is excellent for being smudge-proof and water-resistant on almost all surfaces, making it ideal for nearly any situation. Thanks to DRY SAFE technology, the markers can remain open for days without drying out. They dry in seconds, making them perfect for left-handed users. The black and green colors are lightfast and weather-resistant, vibrant, low-odor, xylene-free, and refillable. The blocked tip, along with the PP barrel and cap, ensures a long lifespan. The marker is airplane safe, as the automatic pressure equalization prevents leakage during flights. The ink is free from xylene and toluene.