Toru Window Glass Color Crayon Marker Washable Paper Aqua Non-toxic 12 Colors Toru window glass color crayon washable window paper aqua non-toxic 12 colors. New concept crayon on glass, toru glass color! Go beyond papers, imagine and express freely. Try the window glass color on glass, mirror, wall tiles in bathroom, inner surface of vinyl umbrella etc. Anywhere can be children's canvas if there is a smooth surface. It is easily washable by water.