Crayola® Crayons. Nontoxic. Serpentine Design®. Contents and colors may vary. Please retain package for future reference. Quality guarantee. We guarantee the quality of all Crayola products. If this product does not perform properly, please contact us. In the U.S.A. and Canada, call 1-800-CRAYOLA (800-272-9652), weekdays 9 AM-4PM ET. crayola.com. Safety information: ACMI, AP®. Art & Creative Materials Institute Certified. Conforms to ASTM D 4236. All Crayola art materials are nontoxic. Meets performance standard ANSI Z356.1. A Hallmark Company. ©2010 Crayola.