Create colorful murals large handwritten messages or foundations for traditional chalk games including hopscotch tic tac toe and four square. crayola chalk features a special anti roll shape to prevent it from rolling down driveways and other surfaces. kids can keep their chalk close at hand as they create one of a kind sidewalk chalk art. crayola sidewalk chalk washes clean from sidewalks and driveways simply use a water hose to spray away the color ideal for children ages 3 and up. beginner unisex child. assorted colors.