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what is a clue mug

Morphing Mugs

What is a Morphing Mugs™ heat-sensitive clue mug?

In stoneware, our larger 15 oz. Clue Mugs feature an always-visible design and are heat-sensitive.  Hot liquid poured into a Clue mug transforms the room-temperature design and the heat reveals another licensed design element of that same film.


  • Officially licensed heat-sensitive stoneware mug
  • Heat-activation transforms the image from one state to another
  • 15oz in size
  • Officially licensed mug designed and printed in the USA by Trend Setters Ltd.
  • Authentic Morphing Mugs™ heat-sensitive clue  mug

 *While this mug is microwave safe, avoid over-heating (do not allow to boil). We do not recommend dishwasher use, as extended exposure to extreme temperature will damage the product.