Quality crayons. Color smooth, no waxy build-up. Safe and certified non-toxic. The four crayon colors are red, blue, yellow and green, packaged inside the box. The box is silk-screened on one side only in one color ink. Crayons cannot be imprinted. Conforms to ASTM D-4236. Imprint Area: (box only) 2-1/2" W x 7/8" H. Multi-Color Imprint: Not available.