It is silicone, and flexible, with good texture, not easy to deform, and can be reused. Easy to use: You only need to add soapy water after the resin is cured, twists the mold, and the articles can be easily pushed out. You can add paint, dried flower, beads or other resin materials. You only need to add oil or water to create effect resin . The epoxy mold is very soft, easy to use and . Package includes: 36pcs/set Mold