InGwest Home. Morning Coffee Mug. 11 ounce. Changing Color Mug for you and your friend. Ceramic Heat Sensitive Color Changing Coffee Mug. Novelty Heat Sensitive Mug With Funny Smile Didn't like our Coffee Mug by InGwest Home? 100% MONEY BACK! We are responsible for our heat sensitive cup Thanks our Changing Color Coffee Mug you will be able to determine when your coffee is cold; There is nothing worse than to sit down and start drinking cold coffee! Do You search gift? You found it! Our HEAT REACTIVE COFFEE MUG is the good birthday gift for coffee lovers, Dad, Mom, grandmother, husband, wife, son, daughter, or friends! Our Heat Reactive Mug you can give for the Birthday, Christmas, New Year and other holidays. ORDER NOW our Heat Sensitive Mug. Our Coffee Mug changes color completely, not partially! The Changing Color Mug special because when it is empty and cold, it looks like it just has a sleeping face on it. But when you add some hot liquids, the whole mug brightens, revealing a very awake friendly face on the blue background. HAND WASH ONLY. Not microwave, dishwasher or oven safe.