Made with FDA approved food grade silicone. Use the mold with fondant, gum paste, marzipan, chocolate, hard candy, cold porcelain, and many other mediums. To use mold: Lightly dust with cornstarch, press fondant evenly and firmly into the mold, roll over the mold using a rolling pin, cut away any excess fondant and release from the mold. Mold measures approximately 2 1/2" in diameter. Hearts range in size from 5/8" to 1 1/8". Mold has 4 heart cavities.