The Sporting SP1077 magic mug reveals the club's crest as if by magic when it comes into contact with hot drinks. Coated with a black, heat-sensitive pigment when cold, the mug transforms when boiling coffee or tea is poured into it, revealing the Sporting CP image on a green background. Made of ceramic and holding 300 ml, it surprises adults and children alike. An interactive and fascinating gift for any Sporting fan.