Premo! Sculpey is firmer than Sculpey III, and extremely durable when baked. It is a premium line of polymer clay designed especially to satisfy the needs of artists. Perfect for everything from sculpture, bead making, unique wearable art, and moulds, to rubber stamping and home decor. Premo is ready-to-use straight from the package. Smooth and pliable, it's easy to knead, yet stays firm enough for detailed work without crumbling. Oven baking hardens your creations, yet they remain flexible and durable, harder to break than those made with other clays.