In brightest day, in blackest night, no coffee shall escape his sight! Pour hot liquid into the DC Comics Justice League Chibi Green Lantern Heat-Sensitive Morphing Mug and Green Lantern magically appears to show off his totally natural muscles that are absolutely not enhanced at all. Look at those adorable little (rather, super mighty and intimidating) guns! The exterior of this 11-ounce ceramic mug transforms from black as hot liquid is added, revealing the hidden image in full vivid colors. Hand wash only. Not dishwasher safe. Do not microwave.