Comfortable: The triangular shape fits perfectly in the hand for effortless and fatigue-free writing. Dry safe ink. The cap can be left on for several days without drying the ink. Staedtler Triplus Fineliner in ergonomic triangular shape for easy and relaxed writing Dry safe: can be left uncovered for days without drying out Assortment of four fine tip markers with fine metal tip and approximately 0.012 '' stroke Water-based ink, washes off many textiles Polypropylene barrel ensures long service lif