Beautiful Hummingbird and Flower Floral Color Changing Mug for Coffee Tea Cups - Best Gift for Birthday,Christmas or New Year by Nicole's Mug Material: 100% ceramic material Capacity: 11 Ounce When cold = mug shows a plain black When hot = mug will turn white and reveal your design Hand wash only.Can not be placed in the dishwasher. 100% satisfaction guaranteed.It holds liquids well and has a well designed large handle