Cray-Pas Expressionist oil pastels are ideal for high school and college art students, seasoned artists, as well as hobbyists. This extra-fine quality assortment provides bright; vivid colors and good lightfastness. Perfect for every artist; it is suitable for paper; cardboard; canvas; wood and more. Smooth and easy to apply. This package contains 36 colors: 10mmx71mm each. Conforms to ASTM D4236.