This Black Ceramic Matte Classic Colour Changing Reusable Mug Offers A Sophisticated Design With A Playful Twist. The Matte Black Finish Exudes Elegance, While The Color-Changing Feature Creates A Dynamic Drinking Experience. When Filled With A Hot Beverage, The Mug�S Surface Transforms, Revealing A Hidden Design Or Color. Made From Durable Ceramic, This Mug Retains Heat Well And Is Safe For Both Microwave And Dishwasher Use. Its Reusable Nature Supports An Eco-Friendly Lifestyle, Helping Reduce Waste From Disposable Cups. Perfect For Use At Home, The Office, Or On The Go.