Personalised Colour Changing Cups
 
REACT TO COLD LIQUIDS: The tumbler cup changes colour to another as the temperature drops below 15℃ (59 ℉). When you add your favorite cold drink and ice, a magic will happen to the cup. Versatile enough for everyday use. Great for parties, holiday, patio, poolside, picnic ect.
 
Reusable, 
Choice of colours, There is some sparkle effect colours. 
Font designs is on the 2nd picture