With the Flame Color Changing Mug, you’ll always know when your favorite roast is hot and ready to drink! This is a special heat transfer mug, so when the mug is cold, it’s solid black. When it’s full of steaming hot coffee, you’ll see flames climbing the sides. Featuring the FDC Maltese Cross logo, this mug holds 11 ounces of the hottest coffee around. Get yours today!