The Foster & Rye Ice Sphere Molds come as a set of two food-safe silicone molds, each producing a round ice sphere measuring approximately two inches in diameter. Fill the molds with water, close them securely, and place them in the freezer for at least four hours. Once frozen, open the flexible silicone sections to release the ice. The large spherical shape melts more slowly than smaller cubes, making these molds suitable for serving whiskey, spirits, and chilled cocktails.