Package list: 1Pc 7" x 5" Heart Shape Mold 1Pc 5.9" x 4.4" Heart Shape Mold 1Pc 4" x 2.9" Heart Shape Mold 1Pc 2" x 1.5" Heart Shape Mold Size for manual measurement, there may be a 0 to 2 mm error Different Style: This silicone resin molds are compatible with most resins or other casting materials such as epoxy resin, polyester resins, polymer clay etc. You can add some resin pigment, resin dye and embed different kinds of embellishments or fillers, create your resin art projects. Easy to Pop out: You just need to twist the silicone mold and release your creation out of your coaster molds when completely cured. Storage: Please store your resin molds in standard temperature place, avoid from the direct sunlight. Clean these silicone coasters molds with soap water; As for the finished products, there may be rough edges that need to be sanded and polished once removed from the mold, please do not sanding it before the casting has fully hardened.