Morphing Mugs Harry Potter – Marauder’s Map – I Solemnly Swear – 16 oz Large Ceramic Heat Sensitive Clue Mug – Full image revealed when HOT liquid is added MMUGC924

This mug appears to have little secrets to hide, swearing to be up to no good. However, ready your wands (or your hot coffee) and reveal the hidden design! Add hot liquid and watch as the Marauder’s Map is revealed as though you had said the words, “I solemnly swear I am up to no good.”

Authentic Morphing Mugs Heat Sensitive Clue Mug

This is the real deal. This is the legit Morphing Heat-Sensitive Clue Mug by Trend Setters Ltd. This mug looks great sitting out on display for those who like to show off their collection. Pouring hot liquid enhances the design with a surprise reveal. Perfect for gifting or collecting, drinking or displaying!

Do you know Hogwarts as well as Moony, Wormtail, Padfoot and Prongs do? If you solemnly swear you are up to no good, then this 16 oz color changing mug is for you!
At room temperature, this mug appears to only have the Marauder’s famous phrase and footprints. Add hot liquid to reveal their charmed map of Hogwarts! Mischief managed.
We didn’t use the Doubling Charm on this product! Images are to show the mug’s design from left to right. This listing is for one (1) ceramic mug.
To preserve the mystical abilities of this mug, we recommend hand wash only. Not microwave safe.
Trend Setters Ltd. creates a variety of officially licensed products from your favorite fandoms as well as hundreds of original designs.