The Tovolo Golf Ball Ice Molds Set of 3 freeze three golf ball spheres at once, enough for a round of drinks with friends. Each mold makes a 2.5 inch sphere with a realistic dimple pattern pressed into the silicone, so it reads clearly as a golf ball in a rocks glass. The large spheres melt slowly, keeping whiskey, bourbon and cocktails cold without watering them down. Wide-opening lids make filling easy with no funnel and no spills, and a fill line shows the right water level. Freeze for 4 to 6 hours, then squeeze the flexible BPA-free silicone to pop each sphere out. Tight-fitting lids seal out freezer odors, and the molds stack to save space. The green molds are dishwasher safe.