The Unemployed Philosophers Guild - Moon - Heat Changing Mug 392Here are two gorgeous Moon portraits the "magnificent desolation" of the Near Side and the mysterious terrain of Far Side. When the mug is cold, you see the Moon(s) against a sea of black. Add a steaming beverage and watch the mug transform, revealing the names of Apollo missions, astronauts, landing sites, and milestones. Mugs are ceramic and each comes in a full colour gift box Holds 400ml Disappearing mugs are not dishwasher safe but are microwave