Sargent Art non-hardening clays are ideal for freehand modeling, claymation, and realistic sculpting. Plastilina will never dry out for use over and over again. Perfect for making models and molds! Has vibrant colors. Mineral based, non-hardening, safe, and non-toxic.Details:Available in multiple colors2 lb. pack size3 packs of clay (6 lb. total)Non-hardening clays are ideal for freehand modeling, claymation, and realistic sculptingPlastilina will never dry out, and can be used over and over againSafe and nontoxic