The paint is in the crayon! Watercolor art for young artists is easy: Just add water using the included paintbrush to instantly mix these gorgeous, bright colors. Crayons have more color pigments and less wax which results in brilliant colors. They have a smooth texture and no waxy build-up, plus their triangular shape offers better control. Crayons measure 3-1/2 x 3/8". Paper-wrapped to keep hands clean. 15-color set. AP Seal, non-toxic. Faber-Castell makes high quality art supplies for children and adults.