Perfect Spheres, Every Time: Our large round ice cube moulds feature a specialized small water inlet, ensuring flawlessly spherical 2.5-inch ice cubes with minimal surface imperfections. Your whiskey, bourbon, cocktails, and beverages will stay cooler longer, delivering an indulgent experience with every sip! Unique Ventilation System: Say goodbye to cracked ice balls! Our large ice cube tray round features an innovative Unique Vents Outlet that releases excess air during the freezing process, preventing ice expansion and ensuring a tight seal without leakage. 2-in-1 Funnel Lid: Bid farewell to messy filling with our convenient funnel-shaped lid! Acting as both a sealed cover and water pouring device, filling beyond the max line is worry-free thanks to the vent outlet of the whiskey ice cube mold, preventing mold distortion due to ice expansion. Effortless Release: With flexible silicone construction, releasing your ice spheres is a breeze! Simply press or wait a moment, then twist or pull apart the big sphere ice cube mould for effortless removal, ready to chill your drinks in no time. Space-Efficient & Secure: Our large ball ice cube moulds are designed as individual units, allowing you to tuck them into the nooks and crannies of even the most crowded freezer. Enhanced with a sturdy anti-tipping base, they guarantee stability. Food-Grade & Easy to Clean: Crafted from premium food-grade silicone, our circle ice cube moulds are durable, and dishwasher safe for effortless maintenance. Clean thoroughly before first use for optimal performance.