So what do you do when you want the smooth, easy laydown of a Coloursoft pencil but want to retain the strong point and harder core of an Artists' pencil? Well in that case you get one of these. The Derwent Procolour has been designed to provide a combination of these two popular pencils. A wax-based core allows the Procolour to glide like oil whilst remaining clean and blendable with a non waxy feel. The highly pigmented cores have a unique formulation that ensures the point remains strong and sharp for intricate work. Available in 72 colours with high lightfastness in order to retain their excellent vibrancy, the pencils can be mixed and layered and are great for use with blending pens or paper stumps.