ACTIVA Plus Natural Self-Hardening Clay | Color White | 2.2 poundsA 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;