These are Marvel Iron Man pajama pants! Tony Stark is Iron Man. Billionaire, Playboy, Philanthropist and hero! If you're a fan of Marvel Comics or Iron Man in general, you'll love these top-notch pajama pants! They feature a detailed all-over pattern of the hero in his vintage armor costume with logos and name script designs. They are made of a soft 100% polyester fabric For questions regarding sizing, please refer to size chart. These are the best!