4+. Nothing else is - Silly Putty. Stretch your imagination. Bounce it! Stretch it! Snap it! Questions/Comments: USA & Canada: 1-800-Crayola (800-272-9652), M-F 9 AM-4 PM ET. CE listed. crayola.com. Contents and colors may vary. Please retain packaging for future reference. Safety Information: ACMI AP: Art & Creative Materials Institute certified. Conforms to ASTM D 4236. All Crayola art materials are nontoxic. The real solid liquid. Always made in USA.