Colorful Music Notes Dance In Music "Music" (Twin Side) Magic Surprise Mug Changing Black And White Morphing Mug (11 Oz) 1.Material:100% Ceramic - more healthy than plastic cup 2.Morphing:Just plain black in color when it's cold,mug will turn white and reveal Design only when filled with a hot beverage 3.Capacity: 11 Ounce.Easy to clean,easy to carry 4.Make your life more magic,A fun and unique way to enjoy your favorite hot beverage 5.Our Custom Morphing Mug will be a good gift for your friends and family