Amazon.com: ArtCreativity Jumbo Sidewalk Chalk Set for Kids, Giant Box of 120 Colorful Chalk Pieces, Non-Toxic, Dust-Free, Washable Chalk in 10 Colors, For Driveway, Pavement, Outdoors, Great Arts & Crafts : Toys
Crayola® Washable Sidewalk Chalk - 48 Different Colors - Single Box