Morphing Mugs Riverdale "Secrets Within the Halls" 11-oz. Heat-Sensitive Mug
A perfect gift for your coffee fan! The exterior of this officially licensed 11oz mug transforms from black as hot liquid is added, revealing the hidden image in full vivid colors. While this mug may be used in the microwave, for the longest lasting, highest quality product, we strongly recommend against it. Not dishwasher safe.