Transform bath time for your kids into a creative and artistic exercise with this set of four bathtub crayons. These crayons are specially formulated to draw on porcelain and other hard surfaces and wipes away easily with a sponge and water. This lets your kids write and draw on tile walls and tubs while you can concentrate on getting them clean. Each set includes red, blue, yellow and green colors. Add your school, sports team, organizational or company logo or message to customize.