- Unique Hollow Cylinder Design: This innovative cylindrical ice mold melts slowly, minimizing dilution to keep your beverages cold and flavorful for longer. Personalize your ice by adding fruits like lemon slices, strawberries, or blueberries for a refreshing twist. Note: Tumbler cup is not included. - Thick Food Grade Silicone: Crafted from BPA-free, odorless, and flexible food-grade silicone, our ice molds are durable and reusable. Create custom ice cubes for cocktails, juices, sodas, or coffee, making them perfect for summer gatherings. - Ideal Size for Tumblers: This silicone ice maker produces three large hollow ice cubes, specifically designed to fit 30-40 oz tumblers. The first two cubes fit 30 oz tumblers, while all three are compatible with 40 oz tumblers. Please note: The third cube is not suitable for 20 oz and 30 oz tumblers. - Effortless Filling and Release: To use, simply fill the tray with water, seal with the lid to remove excess air, and freeze for about six hours. When ready, twist the four thick stripes to release perfectly shaped ice cubes. Use scenarios: 1. Enhance your summer parties by chilling beverages with customized fruit-infused ice cubes. 2. Keep your morning smoothies cold and refreshing with slow-melting ice that won't dilute your drink. 3. Impress guests with stylish cocktails that feature unique, hollow ice shapes. Experience the convenience and versatility of our silicone ice mold, designed to elevate your drinking experience.