Crayola® 10 Classic Colors Fine Line Markers. Preferred by teachers! 10 nontoxic. Eco-Evolution™. Here are some ways Crayola is conserving energy and making the products you love more environmentally friendly: Solar panels provide energy to produce one billion crayons and half a billion markers each year in the U.S.A. Using recycled plastic in our products keeps hundreds of tons of plastic out of landfills each year. A new tree is planted for every one used to make our colored pencils. A Hallmark Company. Safety information: AP, ACMI Art & Creative Materials Institute Certified.®. Conforms to ASTM D 4236. All Crayola art materials are nontoxic. Meets performance standard ANSI Z356.5. Contents and colors may vary. Please retain packaging 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-4 PM ET. To learn more about other ways Crayola colors are getting greener all the time, go to crayola.com. ©2012 Crayola, Easton, PA 18044-0431. Serpentine Design®.