Since a child's first writing tool is usually a crayon, that crayon should be one that encourages him or her to use thumb, first and second fingers in a tripod grip. This is what makes Crayon Rocks a wonderful tool for fine motor development. Because of their shape, they do not allow kids to easily grip them in a closed fist or with any other inappropriate style of grip that deters fine motor development. Crayon Rocks are made from U.S.A. grown and processed soy wax. We combine this wax with other plant waxes and a variety of non-toxic powdered pigments to create beautiful colors. We use a natural ground rock to give the crayons their body. This creates a crayon that goes on smooth and blends easily and is, in many ways, much like an oil pastel.