This is the ONLY clay that magically dries into a fully functional crayon Each box comes with a set of 6 blend-able colors of clay that you can shape into anything. Once dry, the hardened clay is now a crayon Apart from the clay of different colours, this tool kit set includes an instruction leaflet, a colouring book, and a moulding knife. Children could follow the instruction sheet to mix the clay of different colours to create new colours. Children can mould the clay into any shapes they like when it is still soft and moist. Upon drying, children could use the moulded clay as crayon, and draw and colour on the colouring book provided.