Triangle design fiber-tip marker, ergonomic for an easy, relaxed writing and drawing. Stable tip, pressure-resistant. Ventilated cap, according to ISO 11540 and BS 7272-1/2. DRY SAFE – it can remain uncovered for days without drying (Test ISO 554). Water-based ink. Easily washable in most tissues. Desktop case STAEDTLER box. The body and cap in PP guaranty a long service life. Approx. line thickness 1.0 mm. 10 bright colors.