Stabilo BOSS Original Fluorescent Highlighter, 2mm + 5mm Tip - Yellow CLASSIC DESIGN - An incomparable design classic  since 1971! It has been a stable favorite and continues to be Europes best selling highlighter. ANTI-DRY-OUT TECHNOLOGY - Dont worry if you accidentally forget to put the cap back on: thanks to STABILO Anti-Dry-Out technology, the STABILO BOSS Original can be left with its cap off for up to 4 hours without drying out. STRONG BUIL QUALITY - The tip will last for a very long time. The two-line widths, 2mm + 5mm - ideal for highlighting texts of various sizes as well as for drawing lines of different thicknesses. REFILLABLE AND WATER-BASED - Its ink is water-based and therefore completely harmless to health. These features make the STABILO BOSS ORIGINAL a perfect highlighter that you can rely on. It is low-cost and easy to refill. AVAILABLE IN DIFFERENT COLORS - available in 9 fluorescent colors!