Features: * Mineral based non-hardening clay * Use for flower arrangements, science projects and more! * Never hardens or dries out * Non-Toxic; Conforms to ASTM D 4236 * Suitable for all ages Product Dimensions: 2.38 x 5.0 x 8.0 in Weight: 4.85 lb Description Non-Hardening clay is fun and easy to use. Sargent Art non-hardening clay is suitable for the tiniest hands. It's very pliable. From the manufacturer Full Range of Colors We carry sets of: Primary, Pastel, Natural, Earth Tone and more. Or you can find single colors of your choosing. All are mineral based, non-toxic and gluten free. Soft & Pliable Our clay is fun to work with because it is extra soft and easy to form. The bright colors don't fade and you can shape and reshape it and it won't harden. Perfect for kids and adults alike!