Strong standard size, easy to hold. Kitpas crayons write smoothly in bright, sod colors. You can draw pictures or write messages on aer, glass, mirrors, whiteboards and more. Or dissolve them in water for watercolor painting. Kitas art can be removed from any non-orous surface with ease. Just wie with a dam cloth. A set of 6 Kitas Medium (white, red, yellow, green, blue, black). Made of araffin wax- Non-toxic, safe for children. Made in Japan.