Wax dry-erasable crayons, in carton box, 8 colours. Dry erasable simply with a piece of paper or cloth. They are pleasant to use because they don t have any smell and when you erase them, no trace is left on the surface. These wax crayons are practical thanks to their ergonomic sheath to use on whiteboards at home or even in the office. They can be used on any smooth surfaces, such as windows or plastic.