The Rae Dunn Harry Potter Color Changing Mug set of 4 with Stirring Wand is a magical addition to any fan's collection. Made of ceramic and featuring a round shape, these mugs are adorned with all four house logos and a glossy finish. The best part? The mugs change color when filled with hot liquids and a stirring wand is included for added fun. Perfect for all occasions and easy to care for with machine washable instructions, these mugs are a must-have for any Harry Potter enthusiast.