Enchanting merchandise: Raise a chalice to the world of witchcraft and wizardry with this beautifully designed Harry Potter Colour Changing glass Get this magical drinking glass today Unique item: Whether it's for a witch or wizard, this Colour Changing Glass is just the thing for any fan's collection This great item is perfect for fans of the Harry Potter books and movies Colour changing glass: Watch as the glass changes colour when you add a cold drink The themed glass shows the iconic Hogwarts crest representing Gryffindor, Hufflepuff, Ravenclaw, and Slytherin Novel and original: For those in the fandom looking for novelty items and all things geek, crazy, and unique, Paladone is your best source for top-selling toys, mugs, collectibles, and novelties Officially licensed: This quality collectible is a unique addition to any fan's set Give this cool collector's merchandise to mums, dads, fans, students, kids, boys and girls who love pop culture fun