Our washable chalks set includes 150 pieces of chalks in 5 colors (blue, green, pink, orange, yellow) Each chalk is 4 inches long. Rolling and breakable resistance. Perfect for preschoolers or elementary students to draw on chalkboards, sidewalks, street, kitchen, backyard, patio, blackboards, playgrounds, and driveways. Premium quality. Child safe: Non-toxic. Meet US toy standards. Item #: 13407