Here’s a Great Harry Potter costume for your son on Halloween. It’s he Ultimate Gryffindor Robe from Harry Potter. This premium deluxe hooded robe is made of Black velvet and lined in Burgundy satin with a front clasp and the Gryffindor Crest on the front. Perfect for Harry Potter, Hermione Granger, Ron Weasley, and any of their other members of the Gryffindor House at Hogwarts! This is an officially licensed Harry Potter costume. sizes: Small (4-6), Medium (8-10), and Large (12-14). You can buy it on this web site.