Summon the Batman! Just add hot water to signal for the Caped Crusader with this incredible The Batman Heat Change Mug. In red and black, the 10-ounce ceramic mug features a heat-sensitive color-changing design with various images, including Batman, the redesigned Batmobile from the 2022 movie, and Gotham City. Simply fill the mug with tea, coffee, or any hot drink of your choosing and watch the design transform and the background shift from black to red before your eyes as it heats up! It's a great gift for any Batman or DC Comics fan. Hand wash only. Not dishwasher safe. Do not microwave.