CRAYOLA-Washable Sidewalk Chalk Maker. Crayola Chalk Maker lets you mold cool shapes out of chalk! Just mix chalk powder with water and pour into one of the included molds. In 10-20 minutes you'll have amazing chalk shapes to add more fun to all your outdoor art creations! This package contains: ten chalk powder colors and mixing containers; three chalk mold trays; and one How-To Book. Conforms to ASTM D4236. Recommended for children ages 6 and up. WARNING: CHOKING HAZARD-Small parts not for children under 3 years. Made in USA.