Heat-Activated Art: Watch as your hot beverage reveals a vivid, full-color image of the Joker with his iconic 'Why So Serious?' question Officially Licensed: Authentic Morphing Mugs heat-sensitive mug, designed and printed in the USA by Trend Setters Ltd Ceramic Construction: Durable, temperature-responsive ceramic material ensures long-lasting use and vibrant color changes Modern Style: Sleek, black design with a modern aesthetic, perfect for any home or office Capacity and Care: Holds 11oz of your favorite hot drink, and is dishwasher safe for easy cleaning Experience the magic of your favorite DC Comics villain with this officially licensed, heat-sensitive mug. Crafted from durable ceramic, this 11oz mug features a sleek, modern design in a solid black color. When you pour in your hot beverage, the exterior transforms to reveal a vivid, full-color image of the Joker with his iconic 'Why So Serious?' question. Perfect for coffee or tea, this reusable mug is a must-have for any Batman fan. Care instructions: Hand wash only.