Simple Noble "KEEP CALM AND I'M AN ARMY WIFE" 11 Ounces Heat Sensitive Color Changing Custom Coffee/Tea Mug Magic Gift Choice For Christmas / New Year / Birthday ... - Ceramic Morphing Mug Cool Magic Morphing Ceramic Mug Size: 11 Ounce Work with coffee,tea,milk at office or party,coffee house,house home Easy to clean,It has a handle that is easy to hold Just plain black in color when it's cold,turn white and reveal design only when filled with a hot beverage