Don't leave home without your favorite beverage and your favorite Doctor Who villain! This heat change travel mug features the images of a weeping angel on one side, while the other side displays the phrase "don't blink" and changes to the image of a lunging weeping angel when filled with warm liquid. A recessed sliding lid also prevents spills. The Doctor Who Weeping Angel Heat Reactive Ceramic Travel Mug measures approximately 5 1/2-inches wide x 3 1/2-inches long x 7-inches tall. Hand wash only. Not dishwasher safe. Do not microwave. Ages 13 and up.