Harry Potter Hogwarts Mug Set of 2 Mugs NWOT Set of 2 mugs perfect for any Harry Potter fan. Featuring a whimsical design with a Hogwarts letter theme, these mugs are a magical addition to your home dining collection. Harry Potter Hogwarts black mugs are in new, unused condition (NWOT). Modern Gourmet. Dishwasher safe. Microwave safe. FAST SHIPPING Questions about these Harry Potter Hogwarts mugs? Please comment below. I will split the set if you only want one.