Specially developed for early learning, Crayola Dough gives little fingers a soft texture and the brightest, most vibrant colors available in any dough. Airtight container keeps dough. Available in assorted colors. Crayola Clay is a non-drying, non-hardening modeling material with a firm consistency helps children develop a sense of form and detail. Oil-based Crayola Clay repels water and can be used multiple times. Crayola Air-Dry Clay is a fine, natural white earth clay that air dries to a hard solid. No kiln or oven necessary! Easy to use with traditional modeling techniques, it's also a snap to clean up. Air-Dry Clay is smoother, finer and less sticky than traditional clay.