The Staedtler triplus colour fibre tipped pen has an ergonomic triangular shape for relaxed and easy writing, drawing and colouring, without the fatigue feeling.The pen is dry safe which means it can be left uncapped for days without drying up, allowing you to switch between colours with ease without the need of replacing the cap. The water-based ink washes out of many textiles in case of any mishaps. It has a sturdy, pressure resistant tip which can take withstand continuous colouring on paper and a line width of approximately 1.0mm. The stand-up Staedtler box makes it ideal for school and office use.