This black t-shirt features a playful math equation: '13 + 2 = 1' in a striking light blue color. Made from what appears to be soft, comfortable cotton, this tee is perfect for those who appreciate a clever joke or a love math. The design is simple yet eye-catching, making it a great conversation starter. Wear it casually with jeans, shorts or khakis for a relaxed, stylish look. This t-shirt combines comfort and humor, making it an ideal gift for teachers, students, or anyone with a witty side.