These Sleek Metal Ice Cubes are 10cm in size and will keep any drink cold for a long time 

Instructions for better use of ice cubes

How long does it take to freeze in the refrigerator?

Freeze in the refrigerator for 3-6 hours;

What's inside the ice cubes?

A mixture of glycerol and water (whose freezing point is lower than that of water;

How is the cooling effect?

The cooling effect is very good, and after being placed in water at room temperature of 29 degrees Celsius for three minutes, the water temperature is less than 9 degrees Celsius. And it continues to cool down. After being placed in regular ice cubes for 5 minutes, the temperature is above 9 ° C and is almost melting;

Can it be disinfected with 100 ° C hot water after being frozen?

Sure, there's no problem;

Is there any other use for it?

Cold compress, hot compress, and placing it in a cup can quickly cool down hot water with multiple functions,

In summer, you can drink cold boiled tea immediately;