"250 strands of lights, 100 individual bulbs per strand, for a grand total of 25,000 imported Italian twinkle lights!" Bring a piece of the good old-fashioned Griswold family Christmas to every cup of hot tea or coffee with this heat-sensitive color-changing ceramic mug. This beautiful collectible features an image of Thomas Kinkade Studios' National Lampoon's Christmas Vacation, done in Kinkade's instantly recognizable luminous style. Watch as the exterior of this 11-ounce National Lampoon's Thomas Kinkade Morphing Mug magically transforms from black as hot liquid is added, revealing the hidden image in full vivid colors! Do not microwave. Hand wash only. Not dishwasher safe. Measures approximately 5 inches x 4 inches x 3 inches.