Dragon Ball Z Mug SON Goku Mug Hot Changing Color Cups Heat Reactive Mugs Super Saiyan Cups Milk Coffee Cup Mug Taza GokuProduct FeaturesSmooth Cup BodyBright Patterns Do Not Change ColorEasy To CleanUnder Nomal Temperature、The Mug is Black. When Pour Hot Beverage Above 40 Degrees、 The Patterns Show Out. Product SpecificationMaterial: CeramicHeight: About 9.5cm Diameter: About 8cmVolume: About 300ml Weight: About 0.4kg Please Note1. With the differences in the measurement method、 please allow 1-3cm in size deviation.2. There might be slightly difference in color because of the computer monitor settings.Please understand.3. Please Note: This bottle can'not be used in microwave oven.