Hogwarts Banner Decoration polyester Includes one printed polyester Hogwarts banner that measures approximately 30" high x 20" wide. Also includes a rod and cord so this Hogwarts house banner is ready to hang when you receive it. Use this Hogwarts banner to decorate your next Harry Potter or Hogwarts themed costume party! This Hogwarts Banner is an officially licensed Harry Potter decoration. We have a huge selection of Harry Potter costumes and accessories available separately.