ooly rainy dayz window gel, 10 color set

Set of 10 non-toxic gel crayons designed for glass, mirrors, and glazed ceramics. Also works on standard drawing and coloring paper. Add water with a brush for a watercolor effect. Wipes off easily from non-porous surfaces with a damp cloth. Not recommended for porous surfaces or surfaces that may get wet.  Non-toxic.  Suitable for ages 3 and up.