Prismacolor premier colored pencils are designed for every level of expertise Artist-quality pencils feature soft, thick cores for a smooth color laydown to allow superior blending and shading Colored pencils showcase high-quality pigments for rich color saturation Excellent resistance to the fading effects of prolonged exposure to light Thick cores resist breakage Highest ASTM approved lightfast ratings Complies with ASTM D 6901 for lightfastness Pack includes twelve pencils