Kids will love learning to write and draw on a blackboard with tried-and-true Crayola Chalk. The classic white chalk pops on black or green chalkboards and erases quickly and easily. These chalk sticks have a smooth texture that glides beautifully over blackboard surfaces. Each stick is 3-1/8" long by 3/8" in diameter. Non-toxic white Crayola Chalk. In a peggable box. Recommended for ages 3 and up.