Experience night turn into day while enjoying your morning coffee with this color-changing day and night mug that shows the whole world.Wake yourself and the world with this color-changing cup. When a hot liquid is poured into the mug, the image on the cup changes from showing a satellite image of the earth at night to an image of the earth during the day. One of the more fun geography lessons, if you ask us!Product information:Mug of good qualityHeat sensitive technologyAs the liquid cools, a detailed geographic image of the earth from space appears, at different stages during the dayWake the whole world up with youNot suitable for microwave or dishwasher use