Which house are you? This piece of official Harry Potter merchandise shows the iconic Slytherin crest from the classic Harry Potter saga on an officially licensed men's t-shirt. This men's officially licensed t-shirt features a regular fit with a crew neck and short sleeves. The majority of our t-shirts come in 100% cotton however some coloured t-shirts can have a fabric composition of 97% cotton, 3% polyester. Popgear is your one-stop-shop for all your character merchandise and clothing needs - we are totally committed to providing you with quality products that you will love.