The Unemployed Philosophers GuildThe Unemployed Philosophers Guild Birds on a Wire Heat Changing Mug - Add Coffee and Colorful Birds Appear, Comes in a Fun Box

Nice mug, birds get coloured once hot drinks is in it.

Bought quite a few heat-changing mugs recently, so I believe I can tell the difference - this one is really great quality. And - it's the only one, that looks great both cold and warm.

Very good service, would use again.

Bought this as a gift for a bird lover. She already loved the black silhouettes, but was delighted when they changed colour with her hot coffee.

Absolutely lovely! I bought it as a birthday present for my Mum and she's delighted with it.

Replacement for one which I put in the dishwasher. Great beaker and talking point.

Baught as a birthday gift for a friend, that person has an interest in birds too, and the joy they had putting a cuppa in this mug and seeing the colours come too was priceless. They said thank you very much, for the thought and that it's different :).

When we washed this mug the stick on label that contains the image comes distorted and loose. You end up with a rather expensive plain mug. The mug is good quality.