Bright Colors Sidewalk Chalk Assortment - 20 Pc.Nothing transforms a sidewalk into an artist's canvas like sidewalk chalk! Give your little Picassos this bright sidewalk chalk and stand back as their creativity flourishes! Great for sharing art with the neighborhood or for spreading positive messages to passersby, this is a great way to get kids outside and flexing their creativity. (20 pcs. per unit) Box, 4 1 2" x 4" x 4 3 4". Safe and non toxic. Conforms to ASTM D 4236.