Crayon Rocks are simply the best coloring tool for young children! Colored and make beautifully textured artwork similar to oil pastels. They are designed to strengthen the tripod grip muscles in young children, preparing fingers and hands for handwriting. Not for children under 3 years. Use with appropriate supervision. All-natural soy wax crayons in 16 colors: red, green, blue, egg yolk yellow, black, brown, orange, purple, pink, grass green, sky blue, sunshine yellow, gray, tan, peach.