Adding hot liquid to any of these cups reveals a secret design in a matter of seconds.
These designs vary from astronomy-themed mugs to nature-inspired ones and beyond.
TheDisappearingConstellation Mugbegins as a black mug with white stars.
Additionally, theGreat Nudes of Art Mugwill tickle any art history-lover.
But to reveal what these paintings really look like, simply add a hot beverage.
These magic heat-changing mugs make the perfect gift for the fall season.
Unemployed Philosophers Guild| $19.95
Unemployed Philosophers Guild| $19.95
Unemployed Philosophers Guild| $19.95
Unemployed Philosophers Guild| $19.95
Unemployed Philosophers Guild| $19.95
