These coaster molds are made of high-grade soft silicone with a shiny surface. The finished products have a mirror effect. very flexible and easy to clean. In Tray different shapes of resin molds, such as square, rectangular, round, oval and drop shape, meet your various needs. You can add various embellishment and fillers like crystal, glitter, dry flowers. Great for DIY jewellery making, earrings, keychain charm, craft gifts and so on. Please store the resin moulds in room temperature place, avoid from the direct sunlight. Clean your moulds with warm soap water. Moulds are made of good quality silicone material, flexible, thick, washable and reusable They are easy to use as their smooth surface makes it easy to cast and de-mould it, after ensuring that resin has completely turned solid. You only need to twist the silicone mould to release your creation from the coaster mould. Different shapes of Resin moulds are used for making coasters, jewellery, ear-rings, pendants, bracelets, art and craft.