This Magic Ceramic mug starts out Black with" Dad Jokes Brewing" printed om the mug.
 As you add your favorite hot beverage, the magic stars to happen! The mug turns white with Dad Jokes all around the mug!. The mug measures 3 3/4" H. x 3 1/2" Dia. and holds 11oz..  Due to the special treatments needed for this process, the Mug is NOT  dishwasher or Microwave safe. Handwash Only.

Handwash. Not Dishwasher and Microwave safe