This set includes a variety of colored pencils that contain quality pigments for unsurpassed lightfastness. Lay down buttery smooth color, blend and layer without any waxy build up. The thick 3.8mm leads are break-resistant and water-resistant; the colors are smudge-proof and provide permanent, rich color. Whether you are rendering sharp fine lines or soft fields of color, these colored pencils will deliver! California cedar wood casing.