-Versatile Ice Cube Tray Molds- Specially designed for 20-40 oz tumblers, which can hold 1-3 hollow cylinder ice cubes each,so you can make different sizes of ice cubes depending on the size of your glass. -Unique Ice Shape- Our ice trays have a unique hollow cylinder design, which makes the ice larger than the ice grains and has a smaller contact surface, which greatly reduces the melting speed of the ice and makes the cooling longer. -Premium Silicone Material- The Ice Cube Tray made of high-quality silicone, which is odorless, non-toxic, and safe for repeated use. It is also flexible and durable, making it easy to pop out the ice cubes without cracking or breaking. It is easy to clean and maintain, as you can simply wash it with water or put it in the dishwasher. It is a reliable and eco-friendly product for your ice-cold drinks. -Ideal Beverage Accessory- The Ice Cube Tray compatible with 20-40 oz tumblers and mug, which are popular and convenient for drinking. They are not only suitable for chilling drinks, but also for making ice for cocktails, whiskey, various beverages, and coffee. They can enhance the flavor and experience of your drinks, making them more enjoyable and satisfying. -Convenient and User-Friendly- The Ice Cube Tray is easy and simple to use. You just need to fill the molds with water, cover them with the lid, and put them in the freezer. After a few hours, you can enjoy perfectly shaped hollow cylinder ice cubes that are easy to remove and fit snugly in your Stanley cups. They are practical and hassle-free, saving you time and effort. -Meets Your Various Needs- versatile and multifunctional, meeting all your cooling needs. Whether it is for outdoor picnics, family gatherings, or office breaks, you can use them to make ice for your drinks. They can also be used for other purposes, such as making popsicles, chocolates, candies, and more. They can add a touch of convenience and enjoyment to your life with every sip.