Drink at the right temperature
This is mug that will help you see when your beverage is still ok to drink; there is nothing to worry about when you get stuck on the phone etc.
The mug changes colour with the temperature this uses a pigment that changes the colour of the surface it start at Off and finished at the On position, which should be the best way to drink, depending on how you like it, it may be the other way around!
Priced at $25.
Source [TechnaBob]
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