Get that sense of wonder back with a custom magic mug. Thanks to the magic of science, this mug alters its color when it heats up and gradually reveals your custom print underneath. Each mug comes with a C-shaped handle, accommodates 11oz of your favorite beverage, and is made with ceramic material that is black on the outside and white on the inside..: One size: 11oz (0.33 l).: Heat-reactive design.: C-shaped handle.: Ceramic material with black exterior and white interior