Sennelier - Soft Pastel - Grey 515 - Sennelier offers our largest line of pastels, with a beautiful range of 552 colors. Sennelier achieves their softness by drying them in the traditional way, in the open air for up to four weeks. Sennelier's selection begins with 83 pure pigments chosen for their intensity and light-fastness. These colors are then tinted up to ten graduations per color producing the widest range available in the world. Sennelier is one of our most popular pastels, due to its uniform softness and incredible range. Still manufactured by hand in the French tradition of the 1800's.