Harry Potter merchandise design. Harry Potter Weasley Jersey is available in adult unisex, kids, or women's sizes. This is a 100% authentic, officially licensed Harry Potter Tee Shirt! Harry Potter is one of the best-selling fantasy book series of all time. From the mind of J.K. Rowling, Harry, Ron, Hermione, Dumbledore, Voldemort, Snape, Hagrid, and all the rest appear in movies, games, and pretty much everything else. Lightweight, Classic fit, Double-needle sleeve and bottom hem