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 etcEASY 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 0.39inchRound Molds:7.05 x 7.05 x 0.39inch Heart Molds:7.0 x 5.0 x 0.39inchOval Molds:7.0 x 4.64 x 0.39inchcolour:transparent whiteMaterial:Silica Package Contents:1 * Round Resin Mold1 * Rectangle Resin Mold 1 * Resin Mold1 * Heart Resin Mold1 * Oval Resin MoldOnly 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.