We are kind of obsessed with these Crayon Rocks. Crayon Rocks were invented by a special education teacher to help children develop a proper tripod grip (needed for writing well) and made out of eco-friendly soy wax. 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. The colors are rich and flow onto paper easily... and they are coloring with rocks, so what could be better? DETAILS- Non-toxic soy-wax crayons. NO petroleum/paraffin wax.- Designed to strengthen the tripod grip muscles in young children and improve motor coordination.- Allows small fingers to color easily in large, wide strokes.- Crayon Rocks are long lasting and durable. Although appearing smaller, volume is actually a little greater than major brand stick crayons. The size was carefully selected for the hands of young children! - Age Group 2+
