Harry Potter Trio 20Oz Heat Reveal Mug
From Seven 20. This Harry Potter Heat Reveal Mug features the iconic image of Harry, Ron and Hermione from Harry Potter and the Deathly Hallows motion picture! The mug features a solid blue exterior that reveals the image when a hot beverage is added.. Heat reveal works with coffee, hot chocolate, or any warm beverage (including hot Butterbeer) No wand necessary! Ceramic. 20 oz. Mug measures: 5-inch x 5-inch x 6'.