Sculpey UltraLight Clay soft and light and bakes hard in your oven. This clay is perfect for jewelry armatures papercraft projects larger sculptures and floating projects. It can be painted or mix it with other Sculpey III or Premo polymer clays to give it some color. It is non-toxic and great for ages 6 and up. 8oz White- Clay is also flexible in thin sheets won t crack in large pieces and can be sanded and painted. So light it floats. General instructions on back of package.