Activa’s Premier clay air dries and can be worked indefinitely when kept moist. Adheres to any core material (Wire Mesh, Rigid Wrap, paper, glass, plastic, wood and styrofoam) and will not stick to your hands or crumble! Premier is ACMI certified non-toxic polymer clay. Premier is excellent for molding and rubber stamping along with many other uses. Premier accepts multiple finishes and air dries to a strong final piece with minimal shrinkage. You are also able to carve, drill or sand when it is dry.