These Art Studio colour changing marker pens provide a versatile tool for drawing, sketching, and artistic projects at home or school. This set includes 25 markers designed to allow for creative experimentation by revealing a secondary colour when layered over the initial ink. Suitable for children and artists who enjoy interactive drawing, these markers function by applying one colour over another to produce a transformation effect. The markers are designed for use on paper and card, providing an engaging way to develop illustrations and colourful designs. Back to School