The Staedtler triplus fineliner 334 Pens are sure to wow your children, as this box contains 30 different colours to choose from. These pens sport a triangular shape, making them easy to hold. They feature a sturdy, meta-clad tip with a fine line width of 0.3 mm. You can leave these pens with their caps off for several days without the fear of them drying out. Additionally, these pens are filled with water-based ink that can be easily washed out of several fabrics.