jovi plastic crayons present the most rugged plastic wax on the market: plasticolor ideal for children from 3 years and beyond, great for colouring and offer a shiny and even texture in tons of attractive colours, which can be mixed together to decorate any paper or card surface. and now, in addition, in metallic shades so that drawing on dark backgrounds is more fun than eve plasticolor is odourless, does not stain and, as it is all lead, it lasts a long time