DURABLE SiLICONE MATERIAL: These resin molds are made of high-quality silicone material, very flexible and durable, the finished product is very shiny and transparency. WITH VARIOUS CASTING MATERIALS: These silicone resin molds are with diverse casting materials such as resin, concrete, plaster, polymer clay etc EASY TO RELEASE: You just need to twist the silicone mold and release the pieces out of the molds when completely cured. Or you could mold spray, it helps extend the mold's life. After you used, wash with soap water, let dry out and keep in flat, store in a cool place, avoid the heat and sharp . ATTENTION: It is best to pour resin in layers for this coaster mold. If amounts of resin are mixed at once, it may result in overheating and warp your mold. The chemicals heat up faster when larger amounts of resin are mixed at once and may burn or warp your pouring cup or mold. Finished product size: Molds :7.05 x 7.05 x 0.39inch Rectangle Molds:7.75 x 5.79 x 0.39inch Round Molds:7.05 x 7.05 x 0.39inch Heart Molds:7.0 x 5.0 x 0.39inch Oval Molds:7.0 x 4.64 x 0.39inch colour:transparent white Material:Silica Package Contents: 1 * Round Resin Mold 1 * Rectangle Resin Mold 1 * Resin Mold 1 * Heart Resin Mold 1 * Oval Resin Mold Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.