This bag contain our FULL collection of colors including ALL the People Pebbles, Basics, pastels and naturals. These will last your children the entire school year as there is no breakage as in stick crayons...and each crayon contains the same amount of wax. All natural soy wax rather than oil based paraffin wax Crayon Rocks are simply the best coloring tool for young children! They are vibrantly colored and make beautifully textured artwork similar to oil pastels. These all-natural soy wax crayons are made from USA grown soybeans and colored with non-toxic pigment powders. They are designed to strengthen the tripod grip muscles in young children, preparing fingers and hands for handwriting. The shape allows small fingers to apply color in large, wide strokes.