Vintage UPS Coffee Mug Heat Activated Change Truck Plane United Parcel Service

Vintage UPS United Parcel Service Coffee Cup Mug Color Heat Activated Change in Truck and Plane Graphics. Novelty mug for UPS - United Parcel Service featuring Next Day Air. This mug is a heat activated color changing mug. I added hot water and the truck fades slightly and the airplane becomes darker. The airplane is visible through the truck even when at room temp. The second photo is of the mug empty on left and with hot water in it on the right. So fun! Rare and hard to find item! Holds about 9 ounces comfortably and measures 3.5 inches tall and the same wide approximately. Made in Brazil. Item is from a pet and smoke free home. Great Retirement Gift or Christmas Gift or for the collector.