This bag contain our FULL collection of colors including the 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 as stick crayon. All natural soy wax rather than oil based paraffin wax. SOY Much fun to color with. Crayon Rocks are simply the best coloring tool for young children and children of all ages.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. Generates creativity in artist of all levels and age.