The perfect stocking filler or Christmas gift for anyone who loves a giggle!  
 
The black colour change mug has a heat sensitive thermochromic coating that reveals the design when filled with hot liquid. It's micowave safe and even dishwasher safe too! It's printed with fade resistant long lasting inks that won't scratch and i'm told they make the perfect cuppa! Posted to you in a smashproof box which means less packaging and less waste too!