With Foam Clay, you can easily and colorfully decorate a variety of crafting materials such as glass, wood, cardboard, terracotta, or even textiles with imaginative designs. This foam-like, soft modeling compound, featuring fun tiny polystyrene beads, does not smear, is health-safe, and hardens on its own while you let it dry for one to three days after crafting. When stored in an airtight container, Foam Clay has a very long shelf life. Even if you forget to put the lid back on immediately after use, you can still use the material. With a little water and some good kneading, you can restore its elasticity.