24 each of 12 colours, 1.4-2.2mm line width. Conical tip. Intense, bright colours. Long lasting, super resistant fibre tip that never retracts. Ventilated cap. Water-based washable ink. Washable pens are water-based and ink may wash out of clothes. Water soluble pens mean that the ink is water-resistant after drying and will not wash out easily. The pens can be left with the caps off for up to 14 days without drying out.