Square Root of 256 16 Yrs Years Old 16th Birthday T-ShirtMachine wash cold with like colors, dry low heat Funny simple math problem age number sweet 16yrs 16 years old 16th b day bday geek geeky nerd nerdy gift idea graphic tee shirt. Lightweight, Classic fit, Double needle sleeve and bottom hem We use high quality and Eco friendly material and Inks! We promise that our Prints will not Fade, Crack or Peel in the wash. The Ink will last As Long As the Garment. We do not use cheap quality Shirts like other