These water-soluble gel crayons go on smooth, and can be used dry or wet. This package contains nine 5.5 inch long gel crayons in assorted colors. Conforms to ASTM D 4236. WARNING: This product contains chemicals known to the state of California to cause cancer, birth defects or other reproductive harm. Do not mouth or chew. Comes in a variety of colors. Each sold separately. Imported.