This innovative ice cube tray creates three different sizes of hollow cylinder ice molds specifically designed to fit 20-ounce, 30-ounce, and 40-ounce Stanley cups. Made from food-grade silicone material, the tray is odorless and built for long-term durability and reuse. The highly heat-conductive silicone enables faster freezing, while the unique hollow cylinder design reduces melting time to help preserve the full flavor of your beverages without dilution. Each hollow cylinder ice mold measures approximately half an inch thick and can be stacked to fit perfectly inside tumbler cups. Simply fill the tray with clean water, place it in the freezer, and enjoy refreshing ice cubes in your coffee, cocktails, whiskey, juice, or other cold beverages. The soft, non-stick silicone construction allows for effortless ice removal by gently bending the mold. The tray comes with a sturdy outer box and lid to protect your ice cubes from odors and dust. This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm under Proposition 65. The tray is available in multiple color options and includes three ice cube size variations to accommodate different tumbler capacities.