Pour your favourite hot beverage into the Harry Potter Magic Wand Heat Change Mug and watch as it magically transforms before your eyes. When cold, this standard sized mug is dark. However, as soon as this mug is warm the wands of Harry, Hermione and Ron spark into action firing bolts of magic, illuminating the official Harry Potter logo. This is the perfect gift for lovers of the Harry Potter franchise and makes a great accompaniment to your next tea-break. The Harry Potter Magic Wand Heat Change Mug is great for use at home, at work or at school. First published in 1997, J.K. Rowling’s bestselling series of novels following the magical adventures of Harry Potter, Ron Weasley and Hermione Granger has since become a cultural phenomenon. A huge success in novel form, the world of witchcraft and wizardry was then given big screen treatment in 2001, launching one of the most successful blockbuster film franchises in cinema history. Harry Potter is instantly recognisable to millions of people across the world, and is hugely popular among fans of all ages. The Harry Potter Magic Wand Heat Change Mug is an officially licensed Harry Potter product.