Celebrate turning 80 in style with this humorous black t-shirt! The design features the square root of 6400, playfully indicating the wearer's age. Made from what appears to be a soft and comfortable cotton blend, this classic fit tee is perfect for birthday parties, family gatherings, or everyday wear. Its simple yet eye-catching design makes it a great conversation starter and a fun way to embrace the milestone of being eighty years young. A unique and lighthearted gift for anyone with a great sense of humor celebrating their 80th birthday. Available in various sizes.