This classic black t-shirt features a humorous nod to the past with the phrase "Back in My Day We Had Nine Planets." The design includes watercolor-style planets and the sun in a row. This shirt is perfect for astronomy enthusiasts, teachers, or anyone who appreciates a witty science joke. The shirt appears to be made of comfortable cotton and is suitable for casual wear. It would make a great conversation starter and a fun addition to any wardrobe. Show off your old-school science knowledge with this unique and playful tee.