Pearl Paperclay is an economy grade modeling material especially developed for schools. Pearl Paperclay is value priced and a great alternative to instant paper mache or Styrofoam® based products. It is made from all natural ingredients, is non-toxic and biodegradable (it carries the Art & Craft Materials Institute AP non-toxic label!). Comes out of the package ready to use (no mixing or kneading required) in a clean white color. Its very soft and fine texture can be sculpted, shaped or molded very easily while moist. After it air dries, it becomes very hard, not spongy. It can be painted or colored with tempera, acrylics or markers making it ideal for kids crafts or classroom projects!Details:White17.5 oz.Conforms to ASTM D4236