Heat Sensitive Coffee Magic Mugs – Set of Color Cute Coffee Tea Unique Changing Heat Cup 12 oz White & Yellow Happy Face and Smiley Emots Design Drinkware Mugs Gift Idea for Mom Dad Women & Men 3 Pack

MAKES YOUR MORNING MORE FUN: Beat the sadness that the morning brings with this exciting Color Changing Mug. As it changes from simple black cup with funny eyes in the dark to amazing mug with multiple funny smiley faces. So fill it up and be ready to smile!
HOW TO ACTIVATE COLOR CHANGE: In order to activate funny coffee mugs the temperature of the hot liquid should be over 70°C/158°F5. At that temperature it is possible for the color of the coffee mug to change.
DARK EYES TO SMILEY FACES INSTANTLY: This Magic Morning Cup’s faces change as soon as heat is applied. Watch as your heat changing mug goes from dark and sleepy eyes to yellow and smiley faces!
KEEPS TRACK OF COFFEE TEMPERATURE: Don’t you hate it when you take a sip of your morning coffee and it’s cold? Well with this unique coffee mugs you don’t have to go through this unpleasant experience anymore. As your coffee cools off, your funny coffee mug turns back to black!