This black t-shirt features a humorous math-themed design with cartoon characters representing a subtraction and addition symbol. The subtraction character asks, "Are you sure I make difference?" to which the addition character replies, "Yes, I'm positive!" It's a fun and nerdy shirt for math enthusiasts and pun lovers alike. Made from what appears to be a comfortable cotton blend, this tee is perfect for casual wear, math class, or showing off your sense of humor. Get ready to spark conversations and spread some positive vibes with this unique and eye-catching t-shirt.