Safe and Durable Silicone Material:Food grade material makes the trays safe to contain drinking water, fruit juice or other fluids to make ice cubes. Large Ice Cube:The size of the large ice cubes made by this mould is 4.5cm x 4.5cm x 4.5cm.Larger ice cube can cool drinks more quickly and melt much more slowly. Easy to Pop Out:The mould can be easily pushed or twisted from the bottom to pop out the ice cubes. Stackable and Removable Lid:The lid comes with the mould can be fitted on top of the moulds, with the lids you could stack anothe mould on it, it would also keep the ice cubes from freezer odors. Suitable for:Cocktails, cordials, liqueur, whiskeys, ice tea, iced coffee drinks, juices and other drinks.