Size: this diamond silicone molds for resin is about 3.5*3.5 inch as shown in the picture Premium Silicone: We use high quality silicone to make this silicone resin mold. The mold is flexible, resistant to tear and easy to demold Wide Compatibility: The resin heart molds silicone is compatible with epoxy resin, polyester resin, clay, gypsum,wax, soap, polymer clay and other materials, providing you with versatile crafting options Wide Application: The unique heart resin mold can create a one-of-a-kind keepsake, resin bookends,home decors and so on. You can use this mold to make special gifts to send to your friends family during Mother's Day, wedding anniversary, party, Anniversary or Birthday gifts Resin Molds for Flowers : This Epoxy molds is large and deep enough, your resin products could stand up on their own, use for wedding bouquet, Valentine's Day flowers, graduation flowers, preservation.It also used for make heart shape paperweight