Fill this large 18 1/2 oz. black ceramic mug with your favorite hot beverage and be amazed as the outside changes to reveal the blood-splattered text "ALL WORK AND NO PLAY MAKES JACK A DULL BOY". The heat changing properties of this mug can be enjoyed again and again. As your drink cools, or the mug is emptied it will return to the original state ready to amaze you the next time you fill it with your hot drink of choice. The Shining Heat Change Mug makes the perfect present for any fan of the 1980 psychological horror film The Shining. Hand wash only. Not dishwasher safe. Do not microwave.