- Fibre-tip pen in ergonomic triangular shape for relaxed and easy writing and colouring- Stable, pressure-resistant tip- DRY SAFE – can be left uncapped for days without drying up (Test ISO 554)- Ventilated cap conforming to ISO 11540 and BS 7272-1/2- Water-based ink- Washes easily out of most textiles- Stand-up STAEDTLER box- PP barrel and cap guarantee long service life- Line width approx. 1.0 mm