It looks like a plain black or blue mug, but add some tea or coffee and – magic – your funny design, cool pattern or special photo is revealed. This mug turns heads. It is made with a special, heat-sensitive coating, so, when any hot liquid is added, it changes colour to reveal your design against a bright, white background. It may seem simple, but, trust us, a morphing mug never fails to surprise and delight.
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