Stay refreshed while embarking on your latest adventure with the Wizards from Hogwarts with this iconic heat change mug inspired by Harry Potter’s Patronus. Harry’s Heat Change Mug is a brilliantly designed drinking mug featuring a decal of artwork from the classic movies and book series. With a background glowing style around his Patronus on the mug, add a hot drink to see the full image magically appear. The reverse has the spell Expecto Patronum! A standard sized 10 ounce mug, Harry’s Heat Change Mug is a great gift for Potter fans and all aspiring wizards, and is the perfect piece of Hogwarts memorabilia. This is a new and unused glass in an illustrated box, stored in a smoke and pet free environment. This is not suitable for dishwashers or microwave use.