Celebrate a 49th birthday with this clever and comfortable t-shirt! The design features a square root symbol with the number 49, making it a perfect gift for math enthusiasts or anyone with a sense of humor. The words "YEARS OLD" are printed underneath the square root of 49. Made from what appears to be a soft, breathable cotton blend, this black tee offers a classic fit that's great for everyday wear. Ideal for birthday parties, casual outings, or just lounging at home, this shirt is sure to bring a smile to anyone's face. Get ready to celebrate in style with this unique birthday tee!