This wax-based clay designed for young children is soft, clean, safe and easy to use. The sampler variety pack offers 20 bright, appealing colors for nearly a pound of clay in total. EZ Shape modeling clay has a long shelf life and never dries out! Use it over and over again to make all sorts of shapes, 3-D figures, creatures and projects. It s perfect for kids of all ages, and according to educational experts, modeling clay opens a world of creativity for children as it helps them develop small motor skills and improves hand-eye coordination.