CRAYOLA-Model Magic. It is lightweight and spongy even after drying. This unique modeling material is fun to use and easier to shape than regular clay. The non-crumbling formula sticks to itself but not to your hands. It can be reused or left out to air dry. This package contains 4 oz of model magic. Available in a variety of colors, each sold separately. Conforms to ASTM D 4236. Made in USA.