✅ COLOR CHANGING - Pour hot liquid into mug and image is revealed ✅ PERFECT SIZE - 11 oz Ceramic Mug ✅ GREAT FOR GIFTING - Made in the USA with imported parts ✅ THE REAL DEAL - Authentic Morphing Mugs Heat-Sensitive Mug by Trend Setters Ltd ✅ PLEASE NOTE - Handwash only. Do not microwave. Bring the artwork of Batman: Arkham City to every hot cup of coffee with this Morphing Mugs heat-sensitive mug. This collectible mug features an image of Batman as he appears in Batman: Arkham City. 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 dishwasher or microwave, for the longest lasting, highest quality product, we strongly recommend against it.