The mold is silicone and is. For epoxy resin molds,resin molds,candle molds,plaster molds. Easy to use,easy to.Flexible and non-stick,easy removal of contents. In addition to being used as candle or soap,plaster molds can be used as resin molds or used for your own craft projects. Great present for men,women and children,boys and girls,teenagers,kids at Christmas,Halloween,birthday party.