Whisk your kiddo away to another magical year at Hogwarts with this Harry Potter T-shirt. Whether they're creeping through the dungeons, mixing enchanted concoctions or divining their way to a good grade, this tee will ensure everyone knows every point they earn goes to Slytherin house. At the end of the year, the Great Hall will be decorated with green and silver, and it'll all be thanks to your little Slytherin.