Stay warm with this great Harry Potter scarf Gryffindor colors of purple and yellow One size fits most Accessories make the costume Officially Licensed Harry Potter accessory The very first scarf came out of Ancient Rome, where it was used to wipe sweat away on a hot day. Eventually the Chinese used this idea to identify ranks of soldiers in their army. By the 19th century, they were being used for cold weather and for fashion, and recently they've become quite popular again. For wizards getting their education at Hogwarts, they're a must-have. You identify your house colors with a scarf. You add an air of mystery with a scarf. You have something you can vehemently toss when casting a spell. Win win win. Don't leave for wizard school without it.