Today is Harry Potter's 40th birthday, and Warner Bros. Consumer Products and K-Swiss are celebrating with a Harry Potter footwear collaboration that's ideal for back to school season (or "Back to Hogwarts" as it were). The collection is split into two styles - the first is inspired by the Hogwarts houses Gryffindor on the Classic 2000 silhouette, Hufflepuff on the CR-Terrati, Ravenclaw on the Caprina, and Slytherin on the GSTAAD '86. The second style is inspired by Quidditch uniforms on K-Swiss' iconic Court Pro II sneaker.