Light as air, non-toxic Cloud Clay? is perfect for ages 3 and up. This soft, pliable modeling material is stretchy and sticks together amazingly well, making it the best modeling clay for an endless variety of projects. It dries to a hard consistency overnight although remains flexible and shatter-proof. When dry, pieces made with Cloud Clay? can be painted with acrylics. Unused clay is reusable when sealed in an airtight container.