This black t-shirt features a humorous mathematical design. The graphic shows the square root of 144, playfully indicating that the wearer is 12 years old. The design is in a vibrant yellow and green, making it stand out against the black background. Faint mathematical equations decorate the background of the tee. This shirt is perfect for math enthusiasts with a sense of humor. It is casual, comfortable, and sure to be a conversation starter. Made with soft, breathable fabric for everyday wear, this tee is a fun and unique addition to any wardrobe.