ACTIVA Plus Clay Natural Self-Hardening Clay Terra Cotta 2.2 pounds A premium, self-hardening, air dry clay with exceptional plasticity; an ultra-fine grade that achieves excellent detail and versatility A superior modeling clay for crafts, art projects, classroom and studio use; easily worked by hand or tool for the desired results Self-hardens and cures to a superior strength and durability with minimal shrinkage;  inch thick dries in 24 hours Will not crumble when dry, can be carved, sanded and drilled when cured; can be kiln dried if desired, accepts virtually any finish Non-toxic, meets ASTM D4236, made in the USA, available in white, black and terracotta