4 years & up. Take the arts and crafts outside with these brightly colored Crayola® Washable Sidewalk Chalk Outdoors Arts Activities Tools. These 48 bold colors with a new anti-roll shape are perfect for drawing fine lines or broad strokes. Children will enjoy decorating sidewalks, driveways, or pavement with these washable chalks sized perfectly for their small hands. Encourage children to identify the colors as they use them. Chalk is compatible with Crayola® outdoor chalk tools.