MATERIAL & QUALITY: The silicone molds are made of durable silicone, very flexible, easy to demold and recyclable. These resin casting molds help keep the resin product in precise, transparent, smooth and mirror shine surface.SIMPLE TO USE: silicone resin mold is smooth and clear, easy to unmold and barely requires polishing. Simply add resin and other resin decor into the mold, then push the other side of the mold and resin comes out smoothly when it's cured.DIY PERSONLIZED COASTERS: It can be used as a special and unique gift to your lovers and friends. Enjoy your game time IMPORTANT NOTICE: 1) The coaster molds set are suitable for casting resin only, not for coating resin. 2) Do not use torch or heat tobubbles while resin in the molds, cause it will damage the silicone molds for sure.Colour:transparent whiteMaterial:Silica gelSize:9cm Package Contents:4 * Coaster Resin MoldOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.