VIVINATURE 350ml Ceremic Magic Mug & Cup Heat Activated Color Changing Coffee Cup Surface Non Toxic Lead Free Cadmium Mug This cup is very well made and durable so it wont break easily if its cared for properly. Of course like any other ceramic cup it will break if dropped on a hard floor. Don't wash in microwave or dishwasher. This cup is so cute! Its black with a sleepy face on it to let you know either there is nothing in it or its cold and when you put something hot into it like coffee, hot cocoa or whatever you like then it gets activated and turn yellow with a happy face! This would be a wonderful present for your loved ones on Thanksgiving Day! This is a ceramic mug and is 350ml so it hold quite a bit made with porcelain, glaze. The handle does not get hot when you add something hot to it so that's a plus! In order to activate cup the temperature of the hot liquid should be over 70C/158F5. At that temperature it is possible for the color of the mug to change. This would be great for cider, tea, coffee, or soup. It would also make a great gift for any occasion. It looks great on a shelf for display and makes a great holder for makeup brushes, pens, etc. Beat the sadness that the morning brings with this exciting Magic Coffee Mug. As it changes from sad to happy so will your mood! So fill it up and be ready to smile!