1Compatibility: This silicone ice cube tray is specially designed for 30oz 40oz cup, which is ideal for making ice for cocktails, whisky, various drinks and coffee. They can withstand long term low temperature storage without breaking. No longer worry about breaking easily. 2Cylinder Shaped Ice Cube: Unique hollow cylinder design of ice tray makes the ice larger than the ice cubes and has a smaller contact surface, which greatly reduces the speed of ice melting, making the cooling longer. 3Easy to Fill: Simply pour water into the tray, cover with the lid and place in the freezer. Enjoy perfect ice cubes in different sizes that can be combined to put in to 3040 oz cups. 4Easy Release: Reusable non stick silicone ice cube tray with independent cavity design makes it easier to release large ice cubes, simply get ice cubes out by pushing the bottom without bending or twisting. 5Ice Cube Tray with Lid: This humanized ice tray allows you to make different size ice cubes while preventing spills and the freezing of excess water and keeps ice cubes from absorbing freezer smell.