Make Perfect Spheres Every Time: Our large round ice cube molds come with a specialized small water inlet to ensure perfectly spherical 2.5-inch ice cubes with minimal surface imperfections. Your whiskey, bourbon, cocktails and drinks will stay cooler longer with every sip Unique Ventilation System: Say goodbye to cracked ice balls! Our large round ice cube trays feature an innovative unique vent that releases excess air during the freezing process, preventing ice expansion and ensuring a tight seal without leaks.2-in-1 Funnel Lid: Say goodbye to messy filling with our convenient funnel-shaped lid! The vent of the whiskey ice cube mold serves as both a sealing lid and a pouring device, so it's worry-free even if you fill past the maximum line, preventing the mold from deforming due to ice expansion.EASY REMOVAL: With its flexible silicone construction, removing the ice balls is a breeze! Simply press or wait a moment, then twist or pull the large spherical ice cube molds open for easy removal, ready to chill your drinks anytime.SPACE SAVING & SAFE: Our large spherical ice cube molds are designed as standalone units, allowing you to tuck them into the nooks and crannies of the most crowded freezers. Features a sturdy anti-tip base for stability.FOOD GRADE & EASY TO CLEAN: Made of premium food-grade silicone, our round ice cube molds are durable and dishwasher safe for easy maintenance. Clean thoroughly before first use for best performance.