Unique Hollow Cylinder Ice Pieces: Our ice mold creates perfect hollow cylinder pieces that fit 30oz insulated tumblers Make three different sizes of slow melting pieces that stack neatly to keep drinks freezing without over diluting Easy Removal & Stackable Design: The flexible silicone mold allows simple piece removal—just twist and press Stackable pieces fit tall glasses or work separately for versatile drink cooling Various Size Choices: Designed to fit three ice molds together, working with different container sizes Great for cocktails, iced coffee, sodas, and mixed drinks Leak Proof Detachable Cover: Features a secure sealing cover to spills and freezer odors Maintains and your refrigerator organized while ensuring handy storage Safe Silicone Construction: Made with flexible, safe silicone that ' s long lasting and earth friendly Perfect for creating pieces for mixed drinks, coffee, juices, and all your favorite beverages