FeaturesEasy to hold and ideal for children aged 3 and overCan be left uncapped for at least 2 months (excludes black) Water based ink is washable on most fabricsNib has excellent resistance to being pushed inNib size 2. 0mm. Ventilated capIdeal for classroom use, these Bic Kids Visa Felt Tip Fine Tip Pens (Pack of 144) feature a fine tip for drawing and colouring. The pens contains water based ink, which is washable from most fabrics. This class pack contains 144 felt pens in vibrant assorted colours.