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Harry Potter (I Solemnly Swear) Morphing Mugs Heat-Sensitive Clue Mug MMUGC924 (Back order till July 2021)

Price: $26.99

I solemnly swear that I am up to no good.


Pour hot liquid into this officially licensed Harry Potter Morphing Mugs Heat-Sensitive Clue Mug and the Marauder’s Map appears!



  • Officially licensed heat-sensitive stoneware mug
  • Heat-activation transforms the image from one state to another
  • 16oz in size
  • Designed and printed in the USA by Trend Setters Ltd. Shipped from USA
  • Authentic Morphing Mugs™ heat-sensitive clue mug


*Hand wash only


HARRY POTTER, characters, names and related indicia are trademarks of and Warner Bros. Entertainment Inc. Harry Potter Publishing Rights JKR.  (s18)