Silicone ice cube tray, 3 hollow cylinders. A practical and flexible silicone mould for making three different sizes of hollow cylindrical ice cubes. The ice cubes can be stacked inside each other, which not only saves space but also improves cooling and prolongs the effect, especially in narrow drinking vessels such as thermos mugs. The mould is made of flexible silicone, allowing the ice cubes to be easily removed without breaking. Hand wash only.