silicone ,flexible to use, good heat resistance, not easy to break. Small and lightweight, easy to make decorations and store,can making beautiful crafts and send it to your friend as a . You can add some exquisite gold powder, silver sequins and various beautiful decorations to the mold, as long as it is filled with epoxy resin, it can bring you beautiful effects, full of your own . Can be used for home decorations, keychains, earrings, necklaces, backpacks pendants and other jewelry pendants. Great mold for you to handmade items, they will bring more fun during the crafting process.